I've played this game a little with my 1997 Affinity P. There are
'CY', 'IC', 'CD' and
'CT' serial numbers and there doesn't seem to be much rhyme or reason to the JIS verses SAE threads from one to the other.
My 1997½ Squier Affinity P on the other hand is a
'CI' version and has US or SAE threads on it but that doesn't mean any others will or will not.
Thankfully Squier never had these made in
Merrie Ole England or there'd be Whitworth threads to worry about too.
and