Need serial number.
The letter prefix of L ahead of the serial number indicates that your H&R model 922 was made in the year 1952.
About 1946
Impossible to answer without the serial number.
am prefix is 1974
The letter c prefix to your serial number indicates that your H&R model 922 was made in the year 1942.
What year was the H & R 922 6" revolver, serial number E664 manufactured? Thanks
Impossible to answer without the serial number.
Serial number
I THINK your H&R 922 was made in 1948. In 1942 they added a letter prefix. changing to double letters in 1961.
Unfortunately, that is not the serial number- it is an assembly number to keep the same parts together during the build. Remove the grips, you will find serial number stamped on frame. It will have letters. Repost with that info.
IIRC Cornell Publications might have an H&R book with sn.
50s to 80s