Since Auburns are not exactly stable on their molded-in stands, I always used a Lego to steady them in my display case. I'll include the small Lego with the bike. Most people call these "rubber" but in my opinion it is a form of vinyl.
Vintage Auburn Motorcycle Toy Figure Model 1950s Red Harley Davidson Plastic USA
Auburn Small Vinyl Cop Bike
Tonka forklift red vintage small 3 in high 5 inch length
vintge aubrun rubber motorcycle 1950s red with green wheels htf euc