OK, here is how the Winchester parts checked out.
The saftey marked "C46015-4 WRA"is WW2 production.
The trigger guard marked "C46025 WRA" is WW2 production.
Of interest is the fact that Forged C46025 WRA guards are only obeserved on Garands produced up until late 1945. After that period ONLY stamped, not milled, trigger guards are encountered.
Also the receiver 1409XXX will be produced by March of 1943.
Given all the data present, realistically only one of two scenarios are likely:
1. This is a original Garand and quite rare as WRA parts are used on a SA rifle. The reverse is often encountered as WRA often used SA parts when they were behind in prodcution. This would be a very collectable Garand, the only problem being the refinished stocks dramatically reduce it's value.
2. This is a Garand that was restored to original, correct WW2 configuration by someone knowledgeable enough to do so. However, a collector astute enough to do this would NEVER refinish the stocks. Another possibility is it was restored to correct configuration and refinished by a later owner.
But here is the rub with Garands, you will probably never know for sure. This is because parets are not individual serial numbered by numbered by lot. The lot numbers can be up to a year apart and still be correct.
But this also works in your favor. By obtaining a correct "P" cartouched, unrefinished stock you can again have a "correct Garand." And that would be my recommendation.
The funny part is more than half of "correct" Garands are rebuilds that were restored to "as original" by knowledgable collectors. This is because during the 1950s almost every Garand (probably 95% of all ever produced) were upgraded and/or arsenal refinished. The 5% that were never molested in any way are those that were privately owned directly after World War 2.
And the only real way to prove a "unmolested" original Garand is by documentation of ownership.
With correct, unrefinished stocks you rifle is probably worth $1,200.00 as a correct rebuild. If it could be proven genuine "orignal" you are into the 2k market with the stocks corrected. With the refinished stocks, it is worth about $800-900 as a rebuild and probably $1,400.00 if a genuine factory gun.
As you can see simply replacing the stocks dramtaically changes it's value.
Anyway, get the Scott Duff book. It will help you appreciate and understand exactly what you own. Whether it pedigrees or not, this Garand did see service in WW2 and is a valuable piece of history. Keep it in the family, your decendents will appreciate it.