The "M" frame is the small original .22 Ladysmith. It is chambered for the .22 Long, NOT a Long Rifle. 7 shot. The 1st model was made 1902-1906, 2nd model 1906-1910, 3rd model 1911-1921. It was discontinued in 1921. There were 26,152 made (all 3 models combined). They are somewhat scarce due to the age, many were ruined by attempting to shoot 22LR, which leads toward the higher prices. Finding one all original with an intact forcing cone is not easy.

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H Richard
SWCA1967 SWHF244