I don't think so - those are more the type for the decade of the 1930s. Military grips were smooth and without medallions.
Grips of the 1911-1920 period are somewhat similar to the pair shown, but with recessed gold medallions, not silver. Any SN on the back side of the right panel?
There is more thinking to do about that SN, especially if all numbers match. There are two more places to look for matching SNs. First, the rear surface of the yoke. Look through a chamber using a flashlight. Second, on the rear surface of the extractor star.

It appears to be chambered for .45 ACP. Can you verify that?