Questions About My Well-Worn Plexiglass Handled Luger

[Hawk62]

First time poster. I also posted about this gun at "the Firing Line" forum, so if you are a regular there too, you've probably seen this already.

Barrel is 1941, serial number 7655.

Rest of the gun is "6311 u". Grips are ugly or cool yellow plexiglass.

Magazine is not matching.

Much pitting on the piece above the trigger, and in some other spots.

Worn black leather holster is dated 1916.

So, it's an old, worn mutt, I know.

Can anyone give me an idea on the date of manufacture for the bottom part of the gun "6311 u", or any other info on it?

I've read that the plexiglass grips could have been GI made "trench art", or possibly made by German POWs. Any educated guesses?

Any other thoughts or opinions on this gun?

I'm thinking of getting wood or plastic grips ( I think the yellow is sort of ugly).

Thanks.