Keyboards catalog in 1976
Roland catalog 1976
Keyboards catalog in 1976
SH-3A Monophonic Synthesizer
SH-5 Monophonic Synthesizer
SH-1000 Monophonic synthesizer
SH-2000 Monophonic preset synthesizer
Strings and Brass ensemble keyboard RS-101
Touch-sensitive electronic piano EP-30 and Low-cost piano EP-10
Accesories, Tape Echo, Stomp box effects and SYSTEM-700, SYTEM-100
Probably 50.12 means Dec. 1975