I don't really have any answers to your specific questions but I believe the writing inside the cap on one side might be C. W. Seiberling, Seiberling Rubber Co, Akron, OH.  There is a Charles Willard Seiberling and a Charles Willard Seiberling Jr.  For more info on the Seiberling Rubber Company see here =>  https://en.wikipedia.org/wiki/Seiberling_Rubber_Company   On the other side of the cap I believe that to be Wm (William) E Holler out of Detroit, MI.  William E Holler was a major car salesman/dealer in the Detroit, MI area.   Why these two people names are inside the cap is anybody's guess but both seem to be automotive related.

With his full name, I confirmed his dob and dod at Find a Grave (I could not make out your headstone photo), then went to Ancestry. That provided the Headstone Application with his correct service number. I used that to find his enlistment record, etc. Without that application, it would have been more of a challenge. As I said earlier, I could not locate his PH orders (at the regimental level); the 91st ID did not not issue PH orders at the division level, as best I can tell, so maybe his were issued by a medical facility. I tried both his name and service number, but could not locate a hospital card for him either. 

Stopped at a sale this morning and picked this up. In amazing shape other then the heavy sharpening on the blade.    

Snagged all the goodies! The theater made major insignia gone by the time you got there? Or left it?

As usual, you are my hero Dan. I have to ask, what search method did you use?  I imagine you started with just his name, correct?

Another simple modification, more VELCRO added to fit Space Force's rank patches.  

Further digging unearthed his CIB orders:  

HIs service number is 35833764. He was assigned and joined Co K 363rd IR in Italy during Nov 44. I tried to locate his CIB orders, but the 363rd IR G.O.s seem to be incomplete. No luck with his PH orders either.   As you can see his enlistment record is a bit messed up!   You can find additional morning reports for him at this link (but currently not available on-line for 1945): https://catalog.archives.gov/search?page=1&q=35833764   I hope this info helps:   Sources: NARA, FOLD3, Ancestry     Dan

That concept of a car wash needs a little work. 

Yes, the first one like this I've seen.....was pretty happy to see it when she pulled it out.   Mark sends