I forgot about this site!
David Neely (Hollywood) did this refinish, for me. Lake Placid Blue fretless Yamaha BB5000 (1987 Taiwan). I have two white MIJ BB5000s.
OP, you should be able to determine the exact date of your bass.
If it was MIJ, bottom of page 1 (Sysytem # E2). If it was made in Taiwan, top of page 6 (System # E11)
Yamaha Serial Number Chart