“Maine Vacationland” tourism promotion pane of 24, published by Maine Poster Stamp Society, 1940; artist signature Don Mackay; size approx. 10.5″ x 9.7″; four-color process printing.
Denmark - c1940s Poster Stamps sold to support the Børnehjælpsdagen (Children's Aid Day) movement. Supposedly sold in booklets, issued without gum, there is very little known about these stamps. Over 35 years I have seen fewer than 200 different designs, and no multiples. Each one has a number, 1 through 20, in a circle.