Circa 1919, the Curtiss Aeroplane Company released a glorious set of 20 labels with various images of their planes in flight. Stamps were purchased and overprinted for use as Colombia’s C2-C10 airmail postage set. Printer & artist unknown.
Postcard front using a Poster Stamp by artist Ludwig Hohlwein; Summer Festival in Munich. On the other side is a picture of the Museum festival site. Mailed to Holland, July 1938. Stamp uses gold ink for lettering, city silhouette, and butterflies about the woman’s head.