I've always enjoyed Isaac Asimov and his robot stories, and this seemed like a good set of stamps to have his "three laws" as the cachet. With all the noise about AI, why don't we hear more about this? It is just programming. Anyhow - the No. 10 cover is in good condition, no bends or tears, it's my cachet on a good quality rag content envelope.
Seller is a member of the AFDCS and the APS.