dfetch,

Thanks for posting the extra pictures. It is a New Model #3 (NM3) Target model chambered in 32-44. Yours has the scarce front sight that came on early target models. It has the brass bead at the back of the front sight. The early NM3 Target guns were all chambered in the 32-44 caliber. These early guns had a rear target sight that was not adjustable. Its very uncommon to find a gun still wearing the non-adjustable rear sight since many were converted to the adjustable rear sight. When this was done the serial number is missing form the rear sight. For some reason your rear sight was swapped out for a standard non target rear sight.

Serial number 552 was the first gun in the NM3 target series to be chambered in 38-44 caliber. By that time the factory stopped using the non adjustable rear target sight and was installing the adjustable rear sight. The series NM3 Target guns were chambered in either one of these calibers with the last serial number being 4333.

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Mark