Mike that's the black & white card right?
I don't think all started at #1. 10 years ago not nearly as many cards were issued. These days think of all the cards say Stations issues, even in a day would be more than Treasury issued in a couple years they used these.
There's a zillion cards to collect if you want different numbers on each. We could stack a pile to the moon! Can you imagine if the hobby got that big & we all wanted #1 & paid top price for that card?
#1 Frontier is worth $10,000. #2 only $9,000 etc.
Are cards the next big area of collecting?
Right now chips are the most valuable then ashtrays. Cards have brought more than any dice I know of! But its a close race.
Postcards should be way more expensive than they are. Matchbooks are doing ok but also should have more value for their historic importance as well. They tell a story as much as a picture postcard!
Slot glass, change cups, keychains, lighters, misc. paper. There's a ton to collect what will be the next big thing?
Sports betting tickets?