I've had this old Clipper for awhile. I'm about 100% positive it's a 1962 Jet Clipper A. I haven't taken the case back off as I believe this to be a compression back and I'm terrible at them.
This thing is pretty much NOS. Zero wear anywhere, including the back.
I stole the movement, and Crystal info from another 1962 JC A we had in the database.