For only 100 dollars I'd buy it if I were you.I'm wondering about that too, normally it should say GRGM and not Made in Germany, I showed it to a pocket watch collector and he said it's possible, I don't know, free is less than 100 dollars
nat.museum-digital.de
The white dial features a portrait of an Imperial Navy admiralI do not think it is a red light either, Gino, as long as the watch indicates WW1 time.
Who is this proud sailor on the dial?