Thank you for contacting Mearto with your appraisal inquiry, and I apologize for the delay. This is a high quality example of what is often referred to as a "boot pistol." The trigger and hammer assembly folds into the piece for concealment and ease of draw from clothing or bags. This particular pistol was made with more care and artistry than is normally seen on these types of pistols. The deep-relieve engraving is well executed. "Netzer" likely refers to the gunsmith or maker of the piece. The wood is also of a high quality, with a vibrant and interesting grain pattern. The metal has a consistent and stable dark patina, with some mild pitting consistent with its age. Given the condition of this piece, and completed auctions of similar items, a fair market estimation is 600-650 dollars. Please reach out with any questions.

Bo Stuck