Sight - Rear Peep Lyman No. 45 peep-sight Winchester Model 1903, 63 ORIGINAL

Lyman No. 45 side-mount peep sight ORIGINAL PATENTED IN 1907 and made through 1964.  This peep sight was produced for the Winchester Model 1903 and Model 63 rifles.  A very rare ORIGINAL Lyman sight FOR these Winchester .22 caliber rifles, and one of the most accurate rear peep sights on the market today.