1964 1964
About 1957-58
1956 570,813 shipped 7/21/1956
1956
1954-58
Frame
With the serial number that you have provided,your Hi standard M-101,.22cal pistol was made in the year 1955.
Between 1971-1973.
1968 2,030,404 Above was first serial number for 1968. Following year began with 2,172,356.
Contact High Standard with the Serial Number and they will tell you when it was manufactured.
Impossible to answer without a serial number.
1978
52 years ago