This 4.25mm pistol is similar to the Menz Liliput. Unlike every Menz I've seen, this pistol does not have a full length slide. Also, the recoil spring is above the barrel and hooked to the slide via a rod, much like a Steyr .25.
The pistol is unmarked except for D.R.P., Crown N proofs, and the serial number. Other than finding the patent, I don't know how to identify this piece.
Thank you for any information that you can provide.
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