+1 Used from the 1950's to 1980's and perhaps beyond.  I have a stack of them here marked 'USN'  

In 1970, 2nd Logistical Command was on Okinawa. I'm sure they were there as far back as 1968 and earlier. They received two or more MUCs for support to Vietnam units. If my memory is right, they were down the hill in Machinato from my unit in Sukiran, HHB 30th Arty Bde.

I rotated the image of the back of the patch to correctly show the bomb as vertical, and filled the edge with transparent fill.

I know what these items are, I just was hoping someone could tell me when they are from. I saw a few that were marked similar to the usn marked ones that were being called ww2. The one marked federal prison industries I saw some marked the same way but with a date, that one could have the date worn off but I don't think so. I found another tray at a trift store but at least this one has a date.

I wonder if there still using them?

Marines in front of bunker, February 1945 Iwo Jima From the Louis R. Lowery Collection. (Official USMC archive photograph)    

Correction on my previous post. The decals are from Cockpit Details; NOT Custom Dioramics. Sorry.   Semper Fi.   Manny

I don’t think so.   US-made.  Probably dates from the very late 60’s after merrowed edge manufacturing was introduced and they were still wearing color insignia.   

And here it is, the Yellow one sewn to a uniform, a 2nd Logistical  Command shirt worn between 1967 and 1970. Sewn above the U.S. ARMY Tape, a South Korean based unit, so probably Japanese Made,

I know you are a proud Dad and Grandpa!   ...Kat