I do not believe the auction house is responsible for misrepresenting a car. It is in the fine print. Bonham's should know better. They are known to do their homework on cars. And this is a sloppy mistake because the 57 and earlier Aceca Bristols are actually Mille Miglia eligible. Oddly enough so are the AC Ace's but the Bristol engine cars run as well. Until the organization changes it's mind.
And it may look like, because I am a broker, I am throwing shade on the auction houses but reading some of the write-ups is like breaking a code. You have to decipher what they are really saying. If they don't trumpet the fact that the car has its original engine it is a clear indication that the car does not have its original engine.
And yes. You have to do your homework. You did not just purchase that OSCA MT4 for $300,000.00 because it was the last car to be auctioned and everyone had left the house leaving you the luckiest guy alive.