Langenau latches you say?
This must have been one of their first!
I think about 1928. Missing 9/16 socket, and probably a ratchet and square extension. IIRC it's 5/8 thats cracked There was also most of an unmarked 12 point hex set in here too. Lots of heavy greasy schmoo. Ive already cleaned with orange degreaser, carb cleaner and gasoline, and its still caked on. A few shreds of a tools of progress sticker remain. all the 6 point and square sockets are unplated with the star stamps.
And another blue box. It's a very well made heavy box all the sockets are DI except the cross hatched one at the left. None of them came with it.