There is no markings that I can find anywhere. I might have to use my jewelers eye loop to see if there is anything in the engraving.
It is missing the piece of metal that slides in the for-end to release the barrels. The for-arm does not come off the receiver but is attached to the receiver and hangs down at an angle to remove the barrels.
The bottom picture showing the lock, on the left side a piece of metal that is bent at a right angle that fits into the wood inletting and locks it in, you have to slide the back end in while holding the trigger forward, then slip the front end into the cut-out in the receiver to lock it in. Pretty amazing detail.
