This is from a set of 150 "Postamps" (Cinderellas) produced from 1942-44. The art is by Robert Lash Robbins and the stamps show accurate insignia for active duty units of the US Army, Army Air Corp and Navy. The 3-vol set I have is from the
Detroit Times newspaper - not sure whether Hearst put them out in association with any other papers.
addition - In a quick online search, I found examples from many newspapers and private publishers - LA Examiner, NY Mirror, SF Examiner.
addition - WOW!! These are
grossly overpriced on
ebay. I see them regularly at militaria shows in the $25-50 range for the set. Same for War Savings Stamp Booklets.