How to identify P-08

[Juris]

Thank you all for your valuable feedback. Here are 4 larger photos. I have had this gun since 72 and have never done anything to refurbish it. Al Looker, the original owner told me he had never done anything to "fix it up". I have shot perhaps 10 rounds and it functions beautifully. He told me the soldiers were required to break it down and toss each part into the respective barrel as they departed the ship after WW1. He hid this in his pants and took it home. Thank you again for your feedback.