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一战前的 .177 BSA LINCOLN JEFFERIES 专利下杠杆式气枪，序列号为 7672，1906 年制造。7672, for 1906, with blued 19 1/4in. barrel, dove-tailed fore-sight, elevating notch rear-sight, tap-action breech, plain air-chamber marked 'BSA AIR RIFLE - LINCOLN JEFFERIES PATENT' over 'MADE BY THE BIRMINGHAM SMALL ARMS COMPANY LD.单针扳机装置，胡桃木锯柄枪托，带棋盘格纹握把，左手跟部印有清晰的商标，扳机护圈弓形，带重量调节器，没有前端装置，杠杆下有 "铲形 "卡扣。 1939 年以前
wolferton-norfolk, Reino Unido
