The best that I can do is say that the model 101 duramatic was made from 1955-1970.They were made in both 4.5in barrel,and 6.5in barrel length,s.the total gun production fiqures and date of manufacturing are not available from the now discontinued company.
1934. A rather early pistol.
With the serial number that you have provided,your Hi standard M-101,.22cal pistol was made in the year 1955.
1971
1,000,000,000
Need the serial number
Impossible to answer without a serial number.
See link below to High Standard data. You did not give us model number.
With the serial number that you have provided,your Hi-Standard model E pistol was made by that firm in the year 1939.
Contact High Standard with the Serial Number and they will tell you when it was manufactured.
Pre 1950
Go to the Ruger website, customer service, historical data, pistol, find your model, and there is a serial number/ year of production list.With the serial number that you provided,your Ruger standard model single six revolver was made in 1960.If you have a standard model automatic Mark I pistol,it was made in 1957.
The numbers 10-21133 are the serial number that was assigned to your Ruger Standard Mark I pistol,which was made in the year 1969.