Thanks will do! I don’t mean to take advantage of you and appreciate your help 

That could be. It has a few ordnance marks on individual parts, trigger housing, top of the bolt.  Those parts were probably inspected and marked prior to any assembly.

the famous cobra king

I showed this yesterday to my Uncle (the only living son of Samuel. He had no idea about why the address was listed as Philly.

That is very interesting, it appears his claim was disapproved, so this must be the correct card for Cpl. Robinson, fantastic!   Why do you think he was promoted to Corporal so quickly in Basic Training?

OOOOH Cheese and Rice! I'm not a hater of the Infantry, but "master"?? When we got back from the Gulf in '91, they put the fellows through the testing and you know what EIB stood for , for those guys .. Everybody In Battalion/Brigade  .. or so the rumor mill rumbled. Leave it to the Army to create another badge. 

https://www.army.mil/article/284481/contracting_soldiers_receive_master_combat_badge

WHAT... in the wild, wild world of sports is a MASTER COMBAT INFANTRYMAN'S Badge1?!!?

I think 1956 was when the brassard first saw regulations. It was sort of a free-for-all, and many were made in a variety of shapes and cloths at local or unit level. I have seen (and own....) various ones made with felt, cloth, canvas, vinyl, or combinations there of. Many are from the early 60's. Most I saw in use by the end of the 80's/1990's were vinyl or OD canvas type for field. 

wow. I have never seen a grave like this, thanks for sharing.