Your H-D is the relatively uncommon match model and probably fairly late production. My match model H-D was first registered in Michigan by a member of the all powerful DPD pistol team in 1947. The match models got a lot of hand work at the factory in this era and were sold for a big premium. They came from the factory with an NRA competition legal 3 pound pull, but the triggers broke like a glass rod. My U.S. Property marked H-D is a much rougher proposition. Think it was made well into WW II as it has the Parkerized finish. Neither has the hole for a mainspring capture rod. My Space Gun does have this hole.
I have never seen an H-D with a cracked slide, but match shooters always had a good selection of recoil springs on hand to get the pistols to function reliably with whatever ammunition they were issued. Match organizers issued common lot cartridges to all shooters participating in events, in those days. My match model came with a half dozen recoil springs in little manila envelopes marked with different brands of ammunition. The different springs were wound from two different wire diameters and vary by length. I only shot this pistol a couple of times, years before I bought it from the owner's estate. We were comparing it to my Ruger and my (then) brand new Walther GSP. It was a very creditable performer.