The Session 11 503, 512, and 520 guitars were launched in the 1985 Japanese catalogue and are featured
on the first models Japanese pages. This page will detail the rest of the 500s, which are the Session 11 503p the
503pm (m indicates maple board) and the 512p
These are the non-locking trem versions of the 503 and 512 and are essentially the same guitar one being SSS and
one SSH as you can tell by the numbers. The only ones I have seen have been made in Japan but that isn't to say
they weren't made elsewhere as well
The basics specs are
Available from July 1987 until 1988
Released at 50,000 yen
Neck Maple with Rosewood Fingerboard (Maple on the 503pm)usual 22 frets 648mm scale and wide radius
Body Basswood
Hardware Chrome
Bridge Vintage DX
Pickups YGS-A1BO (AlnicoV) × 3 on the 503 and "YGS-A1BO (AlnicoV) × 2, "YGH-F1CO (Ceramic) × 1 on the 512
Controls 1 volume and 2 tone
Available Colours Black White and Red
The pickguard and pickup covers are white on all the 503s I have seen and black on all the 512s
doesn't mean they are all like that though.
