Yeah- it’s the same JBC used on the zodiacs with wider endlinks and the H clasp.
Oh, and I think UG used one like this too
Oh man can you source one for me? I don't need the H clasp. I know you have your ear to the tracks when it comes to cool stuff.
I’ll keep my eyes peeled
That will certainly work for now until you round up head links that you prefer.
Can I assume it’s some sort of 2-piece pin?
I'd be tempted to open up the center links to add a spare link than to man-handle the clasp pin out and in again. Less chance of gnarling things up.
I get it. That's why I suggested you simply pry open the two folded links to add an extra link rather than monkey around with the pressed in pin.