The three characters on the top line say " 5 3 Type"
You can google "Chinese numbering"
'Type' (looking kind of like and IT) is a common symbol on Japanese guns. Must be the same in Chinese.
You could have done a lot better job on the photos. Maybe you have a Japanese gun. I dont care. I wont be back. Happy to help out with the Type 53.
Last edited by fourbore; 08/29/20.