This is the ETHAN ALLEN & Co. Belmex Style miniature 3mm Rimfire pistols - it is solid Brass and has a round butt with Mother of Pearl grips. This is an antique, produced between the 1940's and 1950's. This particular model is in "A" or great condition (graded based on the overall working condition and aesthetics for the same style and age) and in excellent condition for its age with minor scratches. This gun has a nice finish, with just some minor tarnish on the gun's body. There are VERY FEW of these guns ever made. The design is his "twist to the side" to load gun which was popular during the mid to late nineteenth century. Comes with everything you see here, including 4mm rimfiire round and push rod! The original box has a small but still great for any collector out there! Overall length is 2 1/4 inches. 

This may actually be a Tom Weston miniature of an Ethan Allen & Co. twist barrel gun that was made between 1940-1950.

Click on the photo to the right for more and/or a larger view.