the body. Later in the decade, genuine Floyd Rose models returned. Basic ID Domestic headstock logos will have "Made in USA" below or beside the logo. Guitars with the "Professional" and "Performer" logos are always imported. A USA J series serial number will always have 4 or 5 digits later, but any more means that it is an imported guitar. Archtop Soloist models have a JA + 4 digit number serial number. For the 1980s custom era, the two standard classifications were the Student and Custom model. Student models featured rosewood fretboards and dot inlays. Custom models feature bound ebony fretboards, pearl sharkfin inlays, and binding on the headstock. There are many examples which blur the line. Often one can find examples with alternate fretboard material, or Student models with binding. Any option was available on request. All Soloists are made using neck-thru the body construction. Later Models There are many variations on the Soloist's basic design in production, but they can be split into four basic groups: SL1, SL2, SL3, SLSMG, and SL4X. SL1 The SL1 was the flagship USA-made Soloist model. It has an alder body intersected by a quartersawn maple neck-thru neck. The bound fingerboard is made from ebony and has 24 jumbo frets and triangular "shark tooth" inlays made from mother of pearl (all SL1 and SL2H models use real mother of pearl for their inlays). The SL1 uses a Floyd Rose original double-locking tremolo. It also has an HSS pickup array of Seymour Duncans, with the neck and middle pickups being single-slot overlapping Classic Stack humbuckers, while the bridge pickup is a TB-4 (JB) "Trembucker" humbucking pickup. The SL1T is the same guitar that uses a string-thru Tune-O-Matic bridge. The Soloist SL1 was discontinued as a production instrument in 2021, being available only through the Jackson Custom Shop. SL2H The SL2H (the 'SL2' is a different model which was produced in the years 1996–1997) shares the same characteristics with the SL1 except the pickup configuration. The guitar is made up of the same wood, 24 frets, neck-thru construction, same bridge, etc. Contrary to the SL1 the SL2H only has 2 Seymour Duncan pickups at neck and bridge positions. In addition, the SL2H uses a 3 way toggle selector switch rather than the 5-way selector blade found on the SL1 and SL3. The SL2H features an "Original" Floyd Rose locking vibrato, while the SL2HT uses a