Pair of Old Signal Flags on Posts, Presumed WW 2 ab ex 9" long x 7 1/8"

9" long x 7 1/8" tall x 1 7/8" deep (just the wood)

but I have not been able to identify it by those marks

South Dakota in the 1970s

with some wear around the edges and a few scratches and stain

When I spotted this box

Pair of Old Signal Flags on Posts, Presumed WW 2 ab ex 9" long x 7 1/8"I are pretty sure these are WW era nautical signal flags, though I find identifying flags and their functions a bit confusing! I presume the white cross on red represents Denmark; the white stripes perhaps simply peace ceasefire, though I'm not completely certain. Whatever the case, I think old flags like these are quite satisfying things to have around, and these two together make for a beauty of a combo. It also seems we may need to be signaling new