You could easily put this collection together with a small bit of patience for well under $600. IMO the best ones of the lot are these enlisted dress collar emblems. Not necessarily rare, but turn up far less often than the rest. 

McBarron did many pieces for the Army. All of the figures are male model types. He also included himself in most of the scenes.

That example was just incredible and with the buyers premium, sold for just over $7000. I would have loved to make a run for it had it not been for the epaulettes in that auction.   Coming from someone who dances in the rarest niche, China Marine items, speaks volumes about the scarcity of these.    i continue to see that cover sold through Morphys and photos described as a 1904. I have yet to find evidence of that.   Heres the excerpt from the 1900 Uniform Manual with the added 1904 addenda   HEAD-DRESS. Special full Dress and Full dress. Brigadier General, Commandant. — A chapeau, of black silk plush, curved pattern same as prescribed for general officers of the Army. On the right side to have an ornament consisting of a gold lace strip two and one-fourth inches wide with embroidered edge, on which will be placed a gilt and burnished Marine Corps cap ornament and a large-sized Marine Corps button. A gold wire tassel to be on front and rear peak of the chapeau. Plume to be of yellow ostrich feathers. All line officers.— A. helmet of fine felt, of the same shape as the standard sample adopted for enlisted men. A plume to be worn by field officers and a spike by company officers.   I know Im missing something. I see the 1904 uniform regulations referenced regularly, but all I can see are circulars, addendas and general orders expanding on the 1900 manual. Were the large amounts of these additions compiled for a new 1904 standard that is not recognized officially as a uniform order or regulation? If anyone has access to a digital copy, I would love to see it. 

Very nice Enlisted caps, I am wondering though did the cap worn with the m1938 have any differences from the m1936 other then the band replacing the piping? Also do you have any regs for the fields of service colors for the piping and bands.

Its so '50's! All the prints are like that I recall, with 'tailored' fit uniforms etc. 

Thanks atb. I did a 'google lens' after you replied and tons of those images popped up. That must be Pershing with the 1911.  

Part of an Army print series done in the 1950s-60s by an artist named H. Charles McBaron. He did quite a few series for the Army over many years. They are still available through the US Army Center of Military History. And, yes, the Army in the Philippines against the Moros 

Harbor Defense Command Unit 110 out of San Diego.  Joint USNR/USCGR unit.

I bought this framed 13x20 print at the flea market this morning. U.S. soldier in the middle appears to be armed with a 1911. Is this an engagement with the Moro's in the Philippines, sometime after 1911? What say you.

For sure it dates between  1941 (when the button eagle head was changed to face viewer’s left) and 1949 (when the CPO insignia was affixed to a “hump” on the black band rather than pinned directly to the white portion of the hat).  I too feel it is a WW2 era hat.  You want to buy a sterling pin back CPO insignia with curved USN letters  to restore it.  Easy to find and not overly expensive.  But shop around- some sellers ask unrealistic prices for them.   Put a CPO insignia on there and you’ll have a really nice hat!