I’d have to dig it out of storage and measure it, but 34 iirc. Not sure what happened to the patch but I have a story that will make some of you shed a tear..
My grand parents handed down some very old clothing to me about a decade ago. This jacket and some 501s were the most notable. I asked them to let me know if anything else were to turn up and my grandmother said something along the lines of
“we threw most of it out/donated it. they were stained or had holes in them, and the leather patches cracked in half when we touched them. we washed them before donating them and they looked worse after. you wouldn’t have wanted them”
I bring it up to them here and there to get more clues. All I have found out is the clothes that were tossed out were older than that jacket (as they were their parents), some were jeans, jean jackets, and “formal wear” (church attire)
Sorry for the lengthy reply gents