In my opinion selling a 30's; 40's 50 's etc. vehicle at B. J. or Mecum is a mistake. Seeing a restored 57 T Bird sold at $33,000 and a 65 Bronco right behind it at $115,000 [ previous Mecum Auction ] would tell me Im not at the right place.
I've been using hard rubber hockey pucks for quite a while. Easy to make smaller diameter or thinner if need be. Single drilled hole is usually all that is needed. No failures after years of use.
Yes the market for our type of cars is declining but these selling prices are way to low. Mecum bidders are spending big bucks on Shelby's, Broncos, Camero's, Mustangs GTO's Superbirds and the like. Not the place to sell your vintage Ford.