Greetings CT, I have finally received my 1941 Food Stamp Stamps. They are $0.25 in denomination. I have attache d a "thumbnail" and a high res scan link. https://photos.app.goo.gl/3MJUTKpkXM4SbChJA
Interesting, when these were made it was probably never thought that they would someday be a collector's item.
Never spotted those in a Stamp Catalog! (Catalogue) http://grammarist.com/spelling/catalog-catalogue/ (And don't forget the red and green plastic tokens for making change for Ration Coupons.)
These stamps were never intended for use as postage and they have no gum on the back. They were issued in booklets of four, so you will always see at least one straight edge on them. The orange ones could be used to buy anything (except alcohol) and the blue ones were only for commodity foods like dairy, eggs and produce. The cashier would tear them out of the booklet as needed.
Orange stamps were paid for and the purchaser of orange stamps received blue stamps for free. Blue stamps could be used for surplus commodities. This is also why there was a need to differentiate blue and orange on change tokens and scrip. And they are listed in stamp catalogs along with the cotton stamps.