Note that they are rhyming off s/ns for "low number" Springfields; good for movie shooting only.
Hardly.
On February 7, 1928 after considering all the factors the Chief of Field Service, U.S. Army, General Samuel Hof, made the following policy for the United States Army:
"Our ammunition is getting worse and accidents may be somewhat more frequent. On the other hand, some of these early rifles have been in use for many years and undoubtedly some of them have worn out several barrels. I do not think the occasion merits the withdrawal of the rifles of low numbers in the hands of troops until the rifle is otherwise unserviceable. On the other hand, I do not think we are justified in issuing such rifle from our establishments. I recommend that we instruct our Ordnance establishments to no longer issue rifles with these questionable receivers, that such rifles be set aside and considered as a war reserve and the question of the ultimate replacement of the receivers be deferred. When rifles are turned in from the troops for repair the receivers having these low numbers should be scrapped."
The U.S. Marine Corp, because of an even more limited budget than the Army, did not follow this recommendation and never retired any of its low numbered receivers until they were replaced with the M1 rifle in about 1942. The need for rifles caused by World War II saw many of the low number receiver rifles taken from war reserves and issued to U.S. and foreign troops.
As mentioned, the Marine Corp made no effort to replace their low numbered Springfield rifles, and these rifles saw heavy use on Guadal Canal between August 1942 and February 1943. No receiver failures were reported in the training period before the battles, and during the four major battles that occurred in the seven month period in 1942-43.
The movie was released in September 1941 and filmed in 1940. At this point, no low-number spring fields were released from service yet. They were all either sitting in war reserve (as were nearly all rifles as the US hand't entered WW2) or were being actively used by the Marines.
So in other words, the fact the yard low numbered is either just a coincidence or the film makers were trying for realism by quoting serial number ranges appropriate for 1917 when the film takes place.