1937 Bentley 4¼ Liter All-Weather Tourer / B-39-KU Chassis Information

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter photograph

1937 Bentley 4¼ Liter1937 Bentley 4¼ Liter1937 Bentley 4¼ Liter1937 Bentley 4¼ Liter1937 Bentley 4¼ Liter1937 Bentley 4¼ Liter1937 Bentley 4¼ Liter1937 Bentley 4¼ Liter1937 Bentley 4¼ Liter
All-Weather Tourer
Coachwork: Thrupp and Maberly
Chassis #: B-39-KU
Engine # M 9 BZ
Sold for $173,250 at 2016 Bonhams : The Amelia Island Auction.
Bentley introduced the 4 ¼-liter model in 1936. Designated the 'K' Series, the new chassis was built in two consecutive runs, the 'KT' and the 'KU'. Derby works produced one hundred of each, with the KTs being numbered evenly and KUs being assigned odd numbers. The 4.25-liter unit was a bored out version of the 3.6-liter motor. The larger engine gave these K Bentleys a higher top speed, now approaching 100 mph, with a few streamlined racing example capable of considerably more.

Some of the improvements found on the K Bentleys included new white-metal bearings, larger SU side-draft carburetors, larger valves, and an improved scraper ring design. The generator was now air-cooled, which helped its longevity. There was a new Borg and Beck single-plate clutch and the front end was redesigned to reduce axle tramp under hard braking.

Bentley produced a total of 1,234 examples of the 4 ¼-liter specification, with later-series chassis being given an overdrive transmission.

This particular example is the 19th of the 100 K-Series 4 ¼-liter Bentley chassis built at Derby. It is one of nine bodied as a four-door, four-seat All-Weather Phaeton by Thrupp & Maberly, located in London's West End. This phaeton features twin side-mounted spares within the front fenders.

It was delivered to Bentley's London distributor, Rootes Ltd and then to Thrupp & Maberly, Ltd. on July 2, 1937. The first owner was Captain Charles William Spiers, MP, of New Malden, Surrey. It is believed that the car remained with Captain Spiers for more than three decades.

It is believed that the engine was overhauled in 1977 by Mr. Stanley Brunt of Staffordshire, England.

The car was later acquired by Mr. Arthur B. Mullaly of Carmel, California, and then by Seattle newspaperman Monty Brown. Mr. Brown sold the car to Seattle auto dealer and collector Wade Carter in August of 1995, at which time the car showed 95,600 miles on the odometer. After Mr. Carter's passing, the Bentley remained with his family, until coming to Bonhams Amelia Island Auction in 2016.

This Bentley All-Weather Phaeton has a green body with dark green fenders, and polished full wheel discs. The interior is trimmed in brown leather with a tan canvas top and boot. It has its owner's manual, tool kit, and a set of fitted luggage. The overhead valve six-cylinder engine is fitted with two SU carburetors and produces an estimated 125 horsepower. There is a four-speed manual transmission, four-wheel drum brakes, beam axle in the front, and a live rear axle with semi-elliptic leaf springs.


By Daniel Vaughan | Apr 2016

2016 Bonhams : The Amelia Island Auction

Pre-Auction Estimates :
$140,000-$180,000 
Sale Price :
$173,250

2018 3
2017 2
2016 1
2015 2
2014 2
2013 1
2012 5
2011 4
2010 2
2009 3

YearAvg. SaleHigh Sale# of Sales
2018$121,827$192,9543
2017$169,500$286,0002
2016$173,250$173,2501
2015$203,442$385,6032
2014$914,899$1,595,0002
2013$226,928$226,9281
2012$96,273$293,1465
2011$184,142$249,6834
2010$309,951$332,8482
2009$582,286$1,320,0003

Recent Sales

(Data based on Model Year 1937 sales)
1937 Bentley 4¼-Litre All-weather Tourer
Chassis#: B179JY
Sold for $192,954
  2018 Bonhams : London Olympia
 
1937 BENTLEY 4-1/4-LITER SEDAN
Chassis#: B190KT
Sold for $37,400
  2018 Barrett-Jackson : Las Vegas
 
1937 Bentley 4¼-Litre 'Woodie' Shooting Brake
Chassis#: B142JD
Sold for $135,128
  2018 Bonhams : Goodwood Revival
 
1937 BENTLEY 4 1/4 SALOON
Chassis#: B92KT
Sold for $53,000
  2017 Dragone Lime Rock Park
 
1937 Bentley 4 ¼ Litre Fixed Head Coupe
Chassis#: B91JY
Sold for $286,000
  2017 Worldwide Auctioneers : Scottsdale, AZ
 
1937 BENTLEY 4 ¼ LITER ALL-WEATHER PHAETON Coachwork by Thrupp & Maberly, Ltd.
Chassis#: B-39-KU
Sold for $173,250
  2016 Bonhams : The Amelia Island Auction
1937 Bentley 4¼ Liter image  1937 Bentley 4¼ Liter image  
1937 Bentley 4¼-Litre 'Aerofoil' Sports Saloon
Chassis#: B90KT
Sold for $385,603
  2015 Bonhams : The Chantilly Sale
 
1937 Bentley 4¼-Litre Sports Saloon Project
Chassis#: B188LS
Sold for $21,280
  2015 Bonhams : The Beaulieu Sale
 
1937 Bentley 4¼-Litre Open Two-Seater by Carlton
Chassis#: B55KU
Sold for $1,595,000
  2014 RM Auctions at Monterey
1937 Bentley 4¼ Liter image  1937 Bentley 4¼ Liter image  
1937 Bentley 4¼-Litre Parallel-Door Sedanca Coupé
Chassis#: B28KT
Sold for $234,797
  2014 LES GRANDES MARQUES DU MONDE AU GRAND PALAIS
 
1937 Bentley 4.25 Litre Vanden Plas Coupe
Chassis#: B128KT
Sold for $226,928
  2013 H & H - Rockingham Castle
 
1937 Bentley 4¼-Litre Saloon
Chassis#: B117KU
Sold for $35,588
  2012 RM Auctions - London
 
1937 Bentley 4 ¼ Litre Sports Saloon
Sold for $30,542
  2012 Coys - Blenheim Palace
 
1937 Bentley 4.25 Litre Vanden Plas Pillarless Saloon
Chassis#: B127JY
Sold for $31,042
  2012 H & H Auctions - Rockingham Castle
 
1937 Bentley 4 ¼ Litre Coupé by Gurney Nutting
Sold for $293,146
  2012 Coys Auction - Monaco 'Legende et Passion'
 
1937 Bentley 4¼-Litre Drophead Coupe
Chassis#: B197HM
Sold for $91,048
  2012 Bonhams - Collectors' Motor Cars and Automobilia
 
1937 Bentley 4¼-Litre All Weather Tourer
Chassis#: B170KT
Sold for $212,901
  2011 Bonhams - The December Sale
 
1937 Bentley 4¼ Litre Allweather Convertible
Chassis#: B7HM
Sold for $249,683
  2011 Bonhams - Collectors' Motor Cars
 
1937 Bentley 4¼ Litre Disappearing Hood Sports Tourer by Hooper
Chassis#: B190LS
Sold for $208,221
  2011 RM Auctions - Salon Privé
 
1937 Bentley 4.25 Litre Special
Chassis#: B121JY
Sold for $65,762
  2011 H & H - Pavilion Gardens June 8, 2011
 

Vehicles That Failed To Sell

1937 Bentley 4¼ Liter's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1937 Bentley 4 ¼ Litre Aerofoil Sports SaloonB 90 KT2017 Bonhams : The Chantilly Sale $300,000$400,000
1937 Bentley 4¼ LITER SPORTS SALOONB119KU2017 Bonhams : Scottsdale, AZ $150,000$180,000
1937 Bentley 4¼-Litre Drophead CoupéB79KU2016 Bonhams : The Goodwood Festival of Speed Sale $180,000$240,000
1937 Bentley 4.25 Litre Vanden Plas Style TourerB-183-JY2012 The Pavilion Gardens   
1937 Bentley 4 1/4-Litre Sedanca CoupeB70KT2011 Gooding and Company Pebble Beach Auctions $300,000$400,000
1937 BENTLEY VANDEN PLAS DROPHEAD COUPE 2001 Kruse Auction Scottsdale Arizona$47,500  
1937 BENTLEY VANDEN PLAS DROPHEAD COUPE 2001 Kruse Auction Scottsdale Arizona$51,000  

Comparables

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1937 Bentley 4¼ Liter vehicle thumbnail image  1937 Bentley 4¼ Liter vehicle thumbnail image  
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Vehicle Profiles

Chassis information for the Bentley 4¼ Liter1936 Pillarless Coupe
Coachbuilder: Gurney Nutting
Chassis information for the Bentley 4¼ Liter1936 Roadster
Coachbuilder: Vanden Plas
Chassis information for the Bentley 4¼ Liter1936 Sports Coupe
Coachbuilder: Vanden Plas
Chassis information for the Bentley 4¼ Liter1936 Two Seat Tourer
Coachbuilder: Vanden Plas
Chassis information for the Bentley 4¼ Liter1936 Pillarless Saloon
Coachbuilder: Vanvooren
Chassis information for the Bentley 4¼ Liter1936 Drophead Coupe
Coachbuilder: James Young
Chassis Num: APN 107
Chassis information for the Bentley 4¼ Liter1936 Two Seat Tourer
Coachbuilder: Vanden Plas
Chassis Num: B 138GA
Engine Num: K6BW
Chassis information for the Bentley 4¼ Liter1936 Tourer
Coachbuilder: Horsfield of Halifax
Chassis Num: B 49 GP
Engine Num: U 2 5K
Chassis information for the Bentley 4¼ Liter1936 Airflow Saloon
Coachbuilder: Gurney Nutting
Chassis Num: B118HK
Engine Num: K2BY
Chassis information for the Bentley 4¼ Liter1936 Sedanca Coupe
Coachbuilder: Gurney Nutting
Chassis Num: B44 HK
Engine Num: G8BC
Chassis information for the Bentley 4¼ Liter1936 Barker Sunroof Coupe
Coachbuilder: Barker
Chassis Num: B46 JD
Chassis information for the Bentley 4¼ Liter1936 Drophead Coupe
Coachbuilder: Park Ward & Co.
Chassis Num: B57KU
Engine Num: Z6BM
Chassis information for the Bentley 4¼ Liter1937 Sedanca Coupe
Coachbuilder: Gurney Nutting
Chassis information for the Bentley 4¼ Liter1937 Saloon
Coachbuilder: Mann-Edgerton
Chassis information for the Bentley 4¼ Liter1937 Drop Head Coupe
Coachbuilder: Mulliner
Chassis information for the Bentley 4¼ Liter1937 Drophead Coupe
Coachbuilder: Windovers
Chassis information for the Bentley 4¼ Liter1937 Fixed Head Coupe
Coachbuilder: Gurney Nutting
Chassis Num: B 4 5HM
Chassis information for the Bentley 4¼ Liter1937 All-Weather Tourer
Coachbuilder: Thrupp and Maberly
Chassis Num: B-39-KU
Engine Num: M 9 BZ
Chassis information for the Bentley 4¼ Liter1937 Roadster
Coachbuilder: Vanden Plas
Chassis Num: B-42-KT
Chassis information for the Bentley 4¼ Liter1937 All-Weather Cabriolet
Coachbuilder: Vanden Plas
Chassis Num: B114KT
Engine Num: T7BP
Chassis information for the Bentley 4¼ Liter1937 Fixed Head Coupe
Coachbuilder: Vesters & Neirinck
Chassis Num: B156KT
Engine Num: E9BH
Chassis information for the Bentley 4¼ Liter1937 Open Two-Seater
Coachbuilder: Carlton Carriage Company
Chassis Num: B55KU
Engine Num: B7BK
Chassis information for the Bentley 4¼ Liter1937 Sedanca Coupe
Coachbuilder: Gurney Nutting
Chassis Num: B70KT
Engine Num: M2BY
Chassis information for the Bentley 4.25-Liter1938 Derby Drophead Coupe
Coachbuilder: Carlton Carriage Company
Chassis information for the Bentley 4.25-Liter1938 Drophead Coupe
Coachbuilder: Cockshoot
Chassis information for the Bentley 4.25-Liter1938 Sedanca Coupe
Coachbuilder: Gurney Nutting
Chassis information for the Bentley 4.25-Liter1938 Pourtout Coupe
Coachbuilder: Pourtout
Chassis information for the Bentley 4.25-Liter1938 Drophead Coupe
Coachbuilder: Vanden Plas
Chassis information for the Bentley 4.25-Liter1938 Drophead Coupe
Coachbuilder: Vanden Plas
Chassis information for the Bentley 4.25-Liter1938 Fixed Head Coupe
Chassis Num: B-1-LE
Engine Num: T6BT
Chassis information for the Bentley 4.25-Liter1938 Coupe
Coachbuilder: Vanvooren
Chassis Num: B132LS
Engine Num: F-4-BH
Chassis information for the Bentley 4.25-Liter1938 Coupe
Coachbuilder: Vanvooren
Chassis Num: B132LS
Engine Num: F-4-BH
Chassis information for the Bentley 4.25-Liter1938 All-Weather Tourer
Coachbuilder: Thrupp and Maberly
Chassis Num: B137LE
Engine Num: C8BL
Chassis information for the Bentley 4.25-Liter1938 Drophead Coupe
Coachbuilder: Vanden Plas
Chassis Num: B153LE
Engine Num: G8BH
Chassis information for the Bentley 4.5-Liter1938 Coupe
Coachbuilder: Vanvooren
Chassis Num: B29LE
Chassis information for the Bentley 4.25-Liter1938 Derby Drophead Coupe
Coachbuilder: Mulliner
Chassis Num: B77LE
Chassis information for the Bentley 4.25-Liter1938 Drophead Coupe
Coachbuilder: Mulliner
Chassis Num: B92LS
Engine Num: G8BG
Chassis information for the Bentley 4¼ Liter1939 Embiricos Coupe
Chassis Num: B119MX
Engine Num: W9BC
Chassis information for the Bentley 4¼ Liter1939 Saloon
Coachbuilder: Park Ward & Co.
Chassis Num: B131MX
Engine Num: U5BE
Chassis information for the Bentley 4¼ Liter1939 Sunroof Coupe
Coachbuilder: Vanvooren
Chassis Num: B132LS
Chassis information for the Bentley 4¼ Liter1939 Sport Coupe
Coachbuilder: Park Ward & Co.
Chassis Num: B30MR
Engine Num: C8BM
Chassis information for the Bentley 4¼ Liter1939 Pillarless Saloon
Coachbuilder: Vanvooren
Chassis Num: B3MX
Engine Num: B7BN
Chassis information for the Bentley 4¼ Liter1939 Tourer
Coachbuilder: Vanden Plas
Chassis Num: B91 MX


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