Winchester Serial Numbers Model 101 Site

A "K" prefix in the serial number usually indicates manufacture after 1967, often associated with the Kodensha plant.

Records for the earliest years of production are the most reliable. Serial numbers are typically found underneath the top lever. Serial Number Range 1963 56,000 – 63,499 1964 63,500 – 75,499 1965 75,500 – 91,499 1966 91,500 – 102,999 1967 103,000 – 110,499 1968 110,500 – 117,999 1969 118,000 – 129,499 1970 129,500 – 140,499 1971 140,500 and Up 20, 28 Gauge & .410 Bore Serial Number Range 1966 200,000 – 208,999 1967 209,000 – 210,999 1968 211,000 – 214,999 1969 215,000 – 220,499 1970 220,500 – 228,499 1971 228,500 and Up Post-1971 and Modern Models Winchester Serial Numbers Model 101

Current production Winchester 101s are manufactured in Belgium with assembly in Portugal . These use a different mechanism and numbering system than the vintage Japanese-made versions. A "K" prefix in the serial number usually

Dating a vintage Winchester Model 101 can be challenging because detailed serialization records were not strictly maintained after 1971. These classic shotguns were primarily manufactured in Japan by from 1963 until 1987. Known Serial Number Ranges (Pre-1971) Serial Number Range 1963 56,000 – 63,499 1964

For further historical verification, the Winchester Arms Collectors Association (WACA) and the Cody Firearms Museum are the primary resources for factory research. MGW: Winchester Model 101 History - Midwest Gun Works

For models produced between 1972 and 1987, experts often estimate the date based on features. For example, the presence of Winchoke (interchangeable screw-in chokes) typically indicates production between 1981 and 1987.

The Winchester Model 101 12 gauge was manufactured after 1971, but no serialization records currently exist. 20 Gauge, 28 Gauge, & Midwest Gun Works