"C" prefix indicates 1942
The Letter M prefix to your serial number indicate that you have a H&R model 922 4th model which was made from 1949-1952.The letter M was the last letter used,so I would assume 1951-1952.
Best left to a gunsmith.
Serial number
1951-1952.
Can't be answered without a serial number.
Impossible to answer without the serial number.
Unfortunately, without the serial number, we can't date your revolver. Without knowing the condition, we cannot estimate the value.
What Condition is it in? That determines the value.
Impossible to answer without the serial number.
20-100 USD or so
$50-175, depending on condition.