Hard to tell. I don't see the serial number, and, sometimes, that doesn't tell much, anyway. By 1923, a lot of guns didn't make mention of "Canons Frettes" (monobloc constructed barrels, for non French speakers) on the flats or non brazed ribs, but, you never know.
It is a triple proofed gun, cleaned up nicely, and put back into service. When I see the endless arguments back and forth here, and on other boards, about restoration, I'll quietly think of this gun and how much improved it is, by any account. Bravo, by the way. I wouldn't have had the seeds to try it.
Best,
Ted

PS That "NON POUR LA BALLE stamping on the left tube is warning you that is a tight choke. Taking .002-.003 out of the tubes may make the gun pattern even tighter. With that wrist repair, and short chambers, do yourself a favor and go easy on the loads.