The perfect postcard for sending a nautical message from Washington's own San Juan Islands! Did you know? International maritime signal flags are used for communications with and between boats and ships at sea. The flags each represent a letter, arranged to spell out messages. Individual flags also carry specific meanings, such as maneuvering intentions. These postcards are professionally printed in the USA on heavyweight (16pt) cardstock, with a smooth and smudge-free soft matte finish on the front side. The back is uncoated for easy writing. As with all my artwork, this San Juan Islands postcard is completely unique, dreamed up and designed entirely by me. Based in Anacortes, WA