very nice indeed .... we have two period Pierce bicycle advertising pinbacks. the one and a quarter inch has the green border with the rider in the center with the fig leaf (or whatever), and a seven-eigth inch one in b/w showing the headbadge.
although i got these many years ago, i think they are still doable as a collectible. here's our source (s):
and a typical example of what they have now and then ...
http://www.hakes.com/
and the other:
http://www.anderson-auction.com/
and a typical lot there
http://www.anderson-auction.com/
robert clair
alexandria, va 22308
usa