Bugatti Type 57S Atalante, chassis 57551
Original 57S Atalante with a later replacement engine and supercharger, and a documented concours and auction history.
What to verify before making an offer
Reconcile the engine’s original stamping, later restamp, supercharger installation, and restorations.
Documented auction results
If you’re deciding what to offer, start with transactions for cars of similar specification and history. Check the sale date, condition, and whether the price included buyer’s premium.
| Chassis | Date and auction | Outcome and price | Evidence |
|---|---|---|---|
| 57551 | Aug 2026RM Sotheby’s · The Monterey Auction 20261937 Bugatti Type 57SC Atalante | SoldUSD 4,955,000 · Published sold price | Auction evidenceReplacement engine sourced from 57492 and restamped 30 S. Supercharger added in the early 1970s. |
| 57551 | May 2011RM Sotheby’s · Villa d'Este 20111937 Bugatti Type 57SC Atalante | UnsoldEstimate EUR 3,250,000 to EUR 4,250,000 | Auction evidence |
Review the evidence before you proceed
Assess a car you’ve found
Review the seller’s records, comparable sales, and questions for an independent marque specialist before deciding what to offer.
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Private sourcing
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Chassis and provenance
Original 57S Atalante with a later replacement engine and supercharger, and a documented concours and auction history.
Explore the Bugatti Type 57S guide- 1970 · Supercharger added during restoration
RM dates the supercharger addition to the early 1970s and identifies the earlier replacement engine.
Event evidence - 1976 · Pebble Beach Concours d’Elegance
Best of Show under Bill Harrah.
Event evidence