some unusual signs are up for sale, through Mecum, but not in the "wait until auction day and compete with everyone" way... more like Ebay, bid now, and over the next 18 days get more chances to be the high bidder

 https://ontime.mecum.com/allitems/category_RG91YmxlLVNpZGVkIFRpbjtEb3VibGVkLVNpZGVkIExpZ2h0ZWQ7U2luZ2xlLVNpZGUgTGlnaHRlZDtTaW5nbGUtU2lkZWQgTGlnaHRlZCBDbG9jaztTaW5nbGUtU2lkZWQgUGxhc3RpYztTaW5nbGUtc2lkZWQgVGluO1NpbmdsZS1TaWRlZCBUaW4gRW1ib3NzZWQ/live:page_Mg