Day Before First Day Of Issue Postmark

Since I am interested in the Civil Rights movement, when the Charlton Heston stamp came out I got several hundred and sent them off to my local post office to be dated. I have been selling them off in dribs and drabs, and when I opened the latest box I saw that a bunch of them were dated April 10 2014 instead of the actual April 11 date. Are these worth more? If so, how much should I be asking for them?

They will be of interest to collectors, but price?? Try finding some others issue in FDC auctions. James T. McCusker has an auction coming up, maybe you might find an idea there.

These are interesting to a few collectors but market value is very limited.
Don

My guess is they would be worth about what a correctly dated one would sell for as there would be a very small market of collectors. Personally I would prefer one that is correctly dated. I think most collectors of modern FDCs tend to look for and pay more for fancy cachets that appeal to their tastes while the stamp and cancel are secondary unless the cancel is a fancy illustrated one like some FDCs get these days. Also, I think collectors of modern FDCs might pay a bit more for an autograph of someone integral to the FDC such as the artist who designed the stamp, or a famous relative of the person for whom the stamp is honoring. Or for occasional stamps where a key person is still alive, their autograph such as getting a William Shatner autograph on the new Star Trek stamps that came out September 2 (a Leonard Nimoy autograph on the Vulcan salute stamp would have been exceptional but sadly he passed away last year so that is not possible}.

Agree with Don. I collect FDC'S and they are no interest to me but collectors have unusual tastes.
Tom

Charlton Heston has, I suppose, the unusual distinction of being eleigible for a Civil Rights collection and a Deplorables collection ...