You would certainly like to think so - especially with a popular model - but are they really experts given the amount of varied and diverse classics that travel through there books - do they rely purely on what they look up on Wikipedia for background catalogue description / what details & history the vendor supplies & what the HPI report shows or doesn't show ?but a reputable auction house really ought to know better
Current case in mind is this listing:
Auction house offering a innocently enough described Jowett: http://www.historics.co.uk/buying/aucti ... p.aspx?p=2
Thread from the Jowett Car Club forum and the real history of vehicle: https://jowett.net/forum/viewtopic.php?f=7&t=4043
Result is that in reality that it is a bitza made up from various Jowett models & parts with little provenance to prove that it is the real thing that left the factory