Impossible to answer without a DETAILED description of ALL markings and features to include overall condition
With the serial number that you have provided,your Hi standard M-101,.22cal pistol was made in the year 1955.
5-500 depending on specifics
"M" prefix indicates 1952
Impossible to answer without knowing who made it and what the caliber is.
1956
$125-$200, depending on condition.
1954-58
1957
Between 1971-1973.
2-500$ doc
$500
To determine the manufacturing year of your Hi-Standard Dura-Matic M-100 pistol, you'll need to reference the serial number. Hi-Standard firearms typically have a serial number lookup chart or database that can help identify the year of production based on the serial number. You can also consult with collectors, dealers, or online forums dedicated to vintage firearms for more specific information.