U.S. Service Issue Pocket Signal Disk for Semaphore and Morse Code Practice colored ink drawing and most of the animals

and most of the animals on the fronts can still be distinguished

The message at the bottom from the sender

another obsession that has revealed itself through my picking is one for unusual boxes of all shapes and sizes

this has yet to happen

U.S. Service Issue Pocket Signal Disk for Semaphore and Morse Code Practice colored ink drawing and most of the animalsThere were a few different iterations of double sided "Pocket Signal Disks" like this one I've seen one issued by the Boy Scouts, one from WWI, and this one from WWII designed for practicing two arm Semaphore and International Morse Code. Tons of information is densely packed onto both sides, with interactive dials allow one to scroll through a range of "special flags" and "alphabet flags" which correspond to flag positions and codes. I really love