Any help on the stamps? I know they are hard if not impossible to read. But any guesses would be appreciated. I know Francis suggested maybe some say "Erich Bergmann" and in one stamp I think I can make out a partial word "uniform" so not sure if this indicates a manufacturer or a retailer. Also, one stamp may be a Kammer stamp as I can make out a partial "B" but that is it
I ran across this old thread that mentioned a database of makers here. I couldn't find it. If anyone knows where it is would love if you could point me to it
A not so easy to find M15 …
Stamps inside ; HR10 1915 (Huzaren Regiment 10) , BAIV and the maker.
No red kolpak ,but those were almost never used on an M15.

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