A Lyman ORIGINAL No.1 Tang Peep Sight with D stamping under the base. This sight FITS all calibers of the 1892 Winchester and the 1894 CALIBERS 32-40 and 38-55. The sight has the correct patent dates of Jan. 28, "79 and May 6, '84. Sight is still in good condition with crisp mounting holes and peep insert present.