Image credit: © conceptcarz.com (Reproduction Or reuse prohibited).

1955 Siata 300BC Spyder

  • Coachwork by Bertone
  • Chassis Number: ST 446
  • Engine Number: ST 446
This 1955 Siata 300 BC Sport Spider was purchased new from importer Tony Pompeo by Don Black of Oak Park, Michigan who drove it from New York to Detroit. It was later used in Michigan sprints, time trials, and hill climbs, achieving five 1st places, two 3rd places, and a single DNF.

The car was sold through a succession of American enthusiasts, and in 1985 it entered the care of Bill Jacobs, and in 1988 to Tony and Lulu Wang. Its next owner was Jeffrey Mamorsky of Greenwich, Connecticut, and shown at the Greenwich Concours d'Elegance in 2009 where it won Best Italian Sports Car 1946–1956. It was displayed at the Simeone Foundation Automotive Museum in Philadelphia, received First in Class at the St. Michaels Concours in 2013, Second in Class at the Amelia Island Concours in 2014, and First in Class at the Pinehurst Concours in 2015.

This Siata BC is equipped with a tuned 1,100 cc Fiat engine featuring an Abarth induction system and twin Weber 32 IM carburetors. It produces an estimated 51 horsepower which is sent to the rear wheels via a four-speed manual gearbox. There are four-wheel hydraulic finned-alloy drum brakes, an independent suspension with coil springs, and a live rear axle with coil springs.

By Daniel Vaughan | Nov 2021
SIATA (Sociata Italiana Applicazoine Transformazione Automobile) was an Italian company based in Torino, Italy from 1926 to 1970 during which time it manufactured automobiles and automobile components. Among its most beautiful and successful products was the sports-racing 300 BC Sport Spider, designed and built by Nuccio Bertone and known in Italy as the 'Baby Ferrari' or 'Baby Barchetta (Little Boat)'.

This particular example, 'ST446', was sold new by New York Distributor Tony Pompeo to Duncan Black and has a well-documented provenance from that time. This aluminum bodied car is equipped with a modified 1100cc Fiat TV engine featuring an Abarth induction system and dual Weber carburetors. It has been raced at venues all over the United States from new and was written up in a number of United States and European publications in the fifties.

2021 Gooding & Company : Pebble Beach Concours Auction

Pre-Auction Estimates :
USD $250,000-USD $300,000 
Sale Price :
USD $218,400

Recent Sales of the Siata 300BC

(Data based on Model Year 1955 sales)
1955 Siata 300 BC Sport Spider
Chassis#: ST 446
Sold for USD$218,400
  2021 Gooding & Company : Pebble Beach Concours Auction
1955 Siata 300BC image  1955 Siata 300BC image  

Siata 300BCs That Failed To Sell At Auction

1955 Siata 300BC's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1955 Siata 300BC Sports BarchettaST449BC2015 Bonhams : Greenwich Concours $160,000$220,000

Vehicles With Comparable Market Values

Similar sales to the $218,400 range.
2019 Chevrolet Corvette ZR1 Coupe
Chassis#:1g1y42d92k5802611
Sold for $220,000
2024 Mecum : Indy
1963 Chevrolet Corvette Split Window Coupe
Chassis#:30837s102704
Sold for $220,000
2024 Mecum : Indy
1977 Ford F250 Crew Cab Pickup
Chassis#:f26hcy04158
Sold for $220,000
2024 Mecum : Indy
2002 Ferrari 575M Maranello
Chassis#:zffbv55a120130110
Sold for $220,000
2024 Mecum : Indy
1987 Porsche 911 Turbo Coupe
Sold for $220,000
2024 Broad Arrow : Porsche Air|Water
1986 De Tomaso Pantera GT5-S
Chassis#:THPNDA09425
Sold for $218,400
2024 Worldwide Auctioneers : Enthusiast Auction
1931 Chrysler Imperial CG Convertible Coupe
Chassis#:7801567
Sold for $218,400
2024 Worldwide Auctioneers : Enthusiast Auction
1970 PLYMOUTH SUPERBIRD
Chassis#:RM23V0A162343
Sold for $220,000
2024 Barrett-Jackson : Palm Beach
1985 DE TOMASO PANTERA GT5
Chassis#:THPNCY09324
Sold for $220,000
2024 Barrett-Jackson : Palm Beach
MR. NORMS 1964 DODGE POLARA 330 HEMI FACTORY LIGHTWEIGHT DRA
Chassis#:6142227606
Sold for $220,000
2024 Barrett-Jackson : Palm Beach
1965 LINCOLN CONTINENTAL CUSTOM CONVERTIBLE
Chassis#:5Y86N405606
Sold for $220,000
2024 Barrett-Jackson : Palm Beach
1968 CHEVROLET CORVETTE CUSTOM CONVERTIBLE
Chassis#:194678S418369
Sold for $220,000
2024 Barrett-Jackson : Palm Beach
2008 FORD SHELBY GT500KR GLASS ROOF CSM #0000
Chassis#:1ZVHT88S685183589
Sold for $220,000
2024 Barrett-Jackson : Palm Beach
2014 Mercedes-Benz 300SL Replica
Chassis#:mw0022013
Sold for $220,000
2024 Mecum : Houston
1933 Ford Custom Roadster
Chassis#:18561581
Sold for $220,000
2024 Mecum : Glendale
2004 Ferrari 360 Challenge Stradale
Chassis#:ZFFDT57B000138732
Sold for $218,500
2024 RM Sothebys : Dubai
1993 Mercedes-Benz 500 GE 6.0 V8 'AMG'
Chassis#:WDB46322817091768
Sold for $218,500
2024 RM Sothebys : Dubai
1965 Chevrolet Corvette Convertible
Chassis#:194675s123187
Sold for $220,000
2024 Mecum : Glendale
1965 Mercedes-Benz 300 SE Cabriolet
Chassis#:112.023.12.007001
Sold for $218,400
2024 Broad Arrow Auctions : Amelia
1920 Stutz Series H Bearcat
Chassis#:H8391
Sold for $218,400
2024 Broad Arrow Auctions : Amelia
1955 Siata 300BC vehicle thumbnail image  1955 Siata 300BC vehicle thumbnail image  

1955 Siata 300BC

Additional valuation insight and sales data
History
Specifications
Image gallery
Other Siata 300BC model years

1955 Siata 300BC Vehicle Profiles

1955 Siata 300BC vehicle information
Spyder
Coachwork: Bertone
Chassis #: 443
1955 Siata 300BC vehicle information
Spyder
Coachwork: Bertone
Chassis #: 444
1955 Siata 300BC vehicle information
Spyder
Coachwork: Bertone
Chassis #: ST 446
Engine #: ST 446

Vehicle information, history, and specifications from concept to production.