Pre Schaller Floyd Rose FRT 4 with Vertical Fine Tuners and Embossed Logo. These were made for a very short time in 1982 and only available in Japan.
This is the very first Floyd Rose production model to feature Fine Tuners and only produced for about 4 months by Fernandes. Eddie Van Halen briefly used a prototype Gold FRT 4 on his Frankenstrat.
4508 (1 5/8”) Locking Nut with Humpback Clamps