Help Identifying Luger

[RANGER94]

Hello Everyone - thanks for the help. Any idea on about where & about when it was made. My buddies father actually registered the gun when he came back from the war with the city of Detroit. He has (and I have digital copy but don't feel comfortable posting) the registration paperwork. There are two certs: Customs Cert & Safety Cert. All of the serial numbers on the paperwork match the gun.

1) All serial numbers match on the gun
2) He has three clips. One with no serial number and wooden bottom? He has two other clips with serial numbers but do not match the gun.
3) More pictures are attached.
4) I may have missed any other requests that may help??