Remington Scoremaster

This looks like

O (oh) = month 7 = July

Is that B =1933/1955

https://www.remingtonsociety.org/manufacture-dates/

This should help. The sequences don't quite match. Looks like the inspector mark is at the end vs being in the middle of the string.

Mfg date is May/1950
K (May) 1950 (WW)
That cursive stylized A looking mark after the KWW is the inspectors stamp.


Sent in for repair to Remington July/1955
0 (July) B (1955)
The '3' after the OB is the 'Factory Repair'code.
OB3
Sometimes there will be an inspectors stamp after the 3,,sometimes not as in this instance.


Remember the mfg date code was first stamped on the bbl up close to the recv'r.
Then if the rifle came back for repair,,a Repair code was stamped in front of that (towards the muzzle).
Some rifles/shotguns will have more than one Repair date code stamped on them. '3' is always the repair code.
There were others,,I think a 4 was 'returned with no work done'. Another was a Canadian sale,,I don't recall them all. But '3' is the most common.

So the newer date stamp is the the one the farthest to the left (muzzle) as you look at it,,not the right as we are used to reading.

thanks