Stock Transfer Stamps.... Any Idea On Value?

These came in an album I purchased today and I don't collect these but with the Overprint I thought they may be worth something?
any Idea on value would be appreciated.

somewhat under 1 US$

Larence, these are in the Scott catalog if you own one of those,

Peter

They are RD10 and RD13, each of which catalog the minimum 25¢. However, the 80¢ has a straight edge, lowering its appeal to collectors. At this low level most revenue stamp collectors would want to have uncut or non-perfin cancel examples in their album. These are dated perfin cancels, somewhat less desirable to perfin collectors who typically seek precancel perfins with just the company initials. These stamps had been put on the transfer document and then cancelled on document.

Thanks revenuermd, so....maybe I can give them away? lol