Looking forward for your help.
All it has are ink stamps and a small green tag with an ink stamped "42" on it, which I assume is the size. There is another retangular ink stamp on the back of one of the chest pockets but it's too faded to read. I tried dampening it to make it darker but it didn't work. This stamp is just too faded.
Detail of one of the chest pockets. All the front pockets are pretty big, and have pockets within pockets. As can be seen, all the pockets have two rows of male snaps, similar to that of the US WW2 M-42 jump jacket. Actually, this kinda does look like a para jacket.