USA Langley 45c

Image of 2 USAirmail stamps side by side featuring Samuel P. Langley, Aviation Pioneer. Both stamps have the same hand-drawn image of a bearded man in a straw hat, wearing a red bowtie. In the background is an early flying machine and clouds. The shades of blue sky, blue jackets and blue aircraft differ in the 2 stamps, as does the depth of colour in Langley's face. Top RH corner, "45"