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1929 Bentley 4.5 Litre Offset Single Seater

  • Designed by Reid Railton
  • Chassis Number: HB3402
  • Engine Number: SM3901
  • Registration Number: UU 5871
Reid Railton designed this offset single seater for its owner, Bentley Boy Tim Birkin. The engine was modified to cope with the stress of the supercharger. This Blower Bentley recorded its first victory at its first race at Brooklands. The next target for Birkin was the Brooklands outer-circuit lap record, which he broke at 135.33 mph. Birkin then improved the car for the 1932 season and set a new record at 137.58 mph. The car retired from racing soon after. After the war, the car was fitted with a conventional two-seater body and was raced in club events. Fortunately the Monoposto body was preserved and was eventually refitted on the car.

2012 Bonhams - Collectors' Motor cars and Automobilia at Goodwood

Sale Price :
USD $7,906,745 (£ 5,041,500.00)

1929 Bentley 4.5 Litre Auction Sales

Recent Sales of the Bentley 4.5 Litre

(Data based on Model Year 1929 sales)
1929 BENTLEY 4 1/2 LITRE LE MANS SPORTS TOURER
Chassis#: RL3428
Sold for USD$1,545,000
  2024 Gooding : Amelia Island
 
1929 Bentley 4½-Litre Supercharged Le Mans Tourer in the style of Vanden Plas
Chassis#: DS3573
Sold for USD$1,008,777
  2023 RM Sothebys : London
 
1929 Bentley 4½-Litre 'Short-Chassis' Sports Tourer by Vanden Plas
Chassis#: NX3463
Sold for USD$1,600,000
  2023 RM Sothebys : Monterey
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  
1929 Bentley 4½-Litre Tourer by Cadogan
Chassis#: DS3570
Sold for USD$687,000
  2023 RM Sothebys : Amelia Island
1929 Bentley 4.5 Litre image  
1929 Bentley 4½ Liter Tourer
Chassis#: FB 3320
Sold for USD$604,500
  2022 Bonhams : The Greenwich Auction
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  
1929 Bentley 4½ LITER TO SUPERCHARGED SPECIFICATIONS REPLICA LE MANS STYLE COACHWORK
Chassis#: AB 3669
Sold for USD$863,000
  2021 Bonhams : Quail Lodge
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  
1929 Bentley 4½-Litre Open Four-Seater Sports by Vanden Plas
Chassis#: RL3427
Sold for USD$1,105,000
  2021 RM Sothebys : Monterey
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  
1929 Bentley 4½ Liter Sports Tourer
Chassis#: HB3410
Sold for USD$472,500
  2019 Bonhams : Amelia Island
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  
1929 Bentley 4.5 Litre 'Le Mans' Style Tourer
Chassis#: NX3457
Sold for USD$1,113,274
  2018 H & H Auction - Imperial War Museum, Duxford
 
1929 Bentley 4½ Liter Sports Tourer Coachwork by Vanden Plas
Chassis#: RL3427
Sold for USD$1,435,000
  2018 Bonhams : Quail Lodge
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  
1929 BENTLEY 4½-LITRE TOURER
Chassis#: DS3551
Sold for USD$451,385
  2016 Bonhams - Goodwood Members' Meeting
 
1929 Bentley 4½-Litre Tourer
Chassis#: MR 3399
Sold for USD$1,007,788
  2015 Bonhams : Bond Street Motor Car Sale
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  
1929 Bentley 4½-Litre Sports Saloon
Chassis#: PB3527
Sold for USD$1,073,078
  2015 Bonhams : The Beaulieu Sale
 
1929 Bentley 4.5 litre Open Tourer by Vanden Plas
Chassis#: FB3322
Sold for USD$510,000
  2015 Historics at Brookland
 
1929 Bentley Supercharged 4 ½ Litre Original two-seater
Sold for USD$1,045,428
  2013 Coys Auction - A236 True Greats
 
1929 Bentley 4½-Litre Open Tourer by Vanden Plas
Chassis#: vC57S119374
Sold for USD$785,996
  2013 RM Auction - London
 
1929 Bentley 4½-Litre Tourer
Chassis#: FB3324
Sold for USD$505,510
  2013 Bonhams - The Goodwood Festival of Speed Sale
 
1929 Bentley 4 ½ litre Vanden Plas style Tourer
Chassis#: RL3441
Sold for USD$465,271
  2012 Bonhams - Collectors' Motor cars and Automobilia at Goodwood
 
1929 Bentley 4½-Litre Four-Seat Tourer
Chassis#: NX 3452
Sold for USD$740,096
  2012 Bonhams - Collectors' Motor cars and Automobilia at Goodwood
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  
1929-31 4½-Litre Supercharged 'Blower' Bentley Single-Seater
Chassis#: HB 3402
Sold for USD$7,906,745
  2012 Bonhams - Collectors' Motor cars and Automobilia at Goodwood
1929 Bentley 4.5 Litre image  1929 Bentley 4.5 Litre image  

Bentley 4.5 Litres That Failed To Sell At Auction

1929 Bentley 4.5 Litre's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1929 Bentley 4½-Litre Supercharged Tourer by Vanden PlasSM39032021 RM Sothebys : London $3,800,000$4,200,000
1929 Bentley 4½-Litre Tourer 2019 Bonhams : Goodwood Revival $480,000$600,000
1929 Bentley 4 ½ Liter Sports TourerFB33172019 Bonhams : Quail Lodge Auction $700,000$850,000
1929 Bentley 4½-Litre TourerRL34282019 Bonhams : Goodwood Members Meeting $600,000$800,000
1929 Bentley 4½-Litre Supercharged Tourer Recreation by Graham MossRC22092018 RM Sothebys : Monterey $550,000$750,000
1929 Bentley 4.5 Liter Le Mans Replica Fabric TourerPL 34962017 Bonhams : Philadelphia Simeone Foundation Automotive Museum $600,000$700,000
1929 Bentley 4½-Litre Tourer by CadoganDS35702015 RM Sotheby's London Auction   
1929 BENTLEY 4½-LITRE SPORTS BLUEBELLRL34392014 The Goodwood Festival of Speed Sale $480,000$560,000
1929 Bentley 4½-Litre Tourer by Vanden PlasNX34672014 RM Auctions Automobiles of Arizona$1,150,000  
1929 Bentley 4½-Litre Open Tourer by Vanden PlasFB33172013 RM Auctions VILLA ERBA$490,000  
1929 Bentley 4½-Litre TourerFB33242013 Bonhams Collectors' Motor Cars and Automobilia $350,000$400,000
1929 Bentley 4½-Litre Drophead Coupé with DickeyHB34052011 Bonhams The December Sale $400,000$450,000
1929 Bentley 4 1/2 Litre Two-Seat SportsDS35682011 Gooding and Company Pebble Beach Auctions $1,000,000$1,400,000
1929 Bentley 4 1/2 Litre Open TourerDS35612008 Automobiles of London$175,000$275,000$325,000
1929 BENTLEY 4 1/2 LITER DROPHEAD COUPE 2003 Bonhams MOTOR CARS $260,000$300,000

Vehicles With Comparable Market Values

Similar sales to the $1,076,627 range.
1930 Cadillac V-16 Roadster by Fleetwood
Chassis#:7-952
Sold for $1,077,500
2024 RM Sothebys : ModaMiami
1929 Bentley 4.5 Litre vehicle thumbnail image  1929 Bentley 4.5 Litre vehicle thumbnail image  
2006 Bugatti Veyron 16.4
Chassis#:VF9SA15B96M795021
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1977 Lamborghini Countach LP400 'Periscopio' by Bertone
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Sold for $1,070,525
2023 RM Sothebys : Villa Erba
1970 Dodge Hemi Challenger R/T SE 'The Black Ghost'
Chassis#:js29r0b193271
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2023 Mecum : Indy
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1958 Mercedes-Benz 300SL Roadster
Chassis#:198.042.8500081
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1973 Porsche 911 Carrera RS 2.7
Chassis#:9113600901
Sold for $1,072,500
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1958 Mercedes-Benz 300 SL Roadster
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2022 Artcurial : Le Mans Classic
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2022 Gooding & Company : Amelia Island Auction
1929 Duesenberg Model J Convertible Victoria
Chassis#:2474
Sold for $1,066,500
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1929 Bentley 4.5 Litre vehicle thumbnail image  1929 Bentley 4.5 Litre vehicle thumbnail image  
2019 Ford GT
Chassis#:2FAGP9CW8KH200109
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1928 Mercedes-Benz 630 Tourer
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2021 FORD BRONCO 2-DOOR VIN 001
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Sold for $1,075,000
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1957 Mercedes-Benz 300 SL Roadster
Chassis#:198.042.7500592
Sold for $1,066,500
2021 RM Sothebys : Arizona
1935 Auburn 851 SC Boattail Speedster
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Sold for $1,072,500
2020 Worldwide Auctioneers : The Auburn Auction
1996 Zagato Raptor Concept
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1929 Bentley 4.5 Litre vehicle thumbnail image  1929 Bentley 4.5 Litre vehicle thumbnail image  
1956 Bentley S1 Continental Drophead Coupe by Park Ward
Chassis#:BC7LBG
Sold for $1,077,500
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2011 Ferrari 599 SA Aperta
Chassis#:ZFF72RHA5B0181885
Sold for $1,072,500
2018 Gooding & Company : Pebble Beach

1929 Bentley 4.5 Litre

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