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The first is a USGI M1916 holster; as the date indicates, it was made in 1942 by the Boyt company, which I believe was located in Iowa Falls, IA. It is for the M1911A1 service pistol. From its pristine appearance it has either led a charmed life or (more likely) been spiffied up by a previous owner. It appears to be missing the belt hook which attaches it to the pistol belt.

I can't find the second holster in a cursory examination of E.S .Meadows's US MILITARY HOLSTERS AND PISTOL CARTRIDGE BOXES and would guess it is a commercial holster for a short barreled Colt or S&W .38 revolver.

 

[El Bibliotecario]

In my experience most WW2 holsters have become darker than yours due to wear--they were issued for decades after WW2. In 1972 I was issued a M1916 holster made in 1942 by Crump, which I still have; it has acquired a patina of dirt, oil, etc, plus getting wet in the field several times has made it significantly darker than yours--which was why I speculated yours might have been cleaned up. OTOH, around 1970 I purchased a M1916 holster in unissued condtion--so condition runs the gaumet.

If you want to take the time, I'd suggest going to the US Militaria forum
http://www.usmilitariaforum.com/forums/
and posting a picture of your holster. There is a gentleman there--Artu44--who has an extensive collection of USGI holsters and will tell you more than you ever wanted to know about your holster.