I still have some old souvenir cards, mainly USPS and UN and a few others, that I have never been able to sell. Would love to do a package deal with someone and get rid of them if anyone is interested.
Sadly, the USPS and UN cards have really dropped off in price. These were printed in such huge quantities that they now represent a vast oversupply and very little demand. To be honest, the Souvenir Card Collectors Society gives away the USPS cards to young collectors at stamp shows we attend, as a way to build interest.
Just an fyi: We recently did a major upload of images to the Forerunner (F) gallery. http://www.souvenircards.org/html/gallery_F.html These are primarily cards produced by the Plate Printers Union and they showcase some spectacular examples of the engraver's art.
That's good to know. I know I can't sell them on ebay. Would consider donating so you could give them away.
I'll send you a PM. If you search the Stamps category for souvenir cards you will find hundreds of listings. But check the Sold listings and there are very few being purchased.