Hi Greg- I assume that if one of those plaques made its way onto eBay it would sell for quite a bit. I have had offers of $300+ for this small, VERY low denom plaque from the same series, but I can't bare to let it go
As I have said before, I cannot even find good pictures of obsolete Aviation Club plaques and jetons, and have seen no other plaques in private collections, only jetons and chips. I would really like to add another to my own collection, but have not had the chance.