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Roland GR-500 1977 Vintage Analog Guitar Synthesizer - Photos, Videos, Documentation
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1977 Roland GS-500 guitar synthesizer, made in Japan, ser. no. K7xxxx9
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Roland GR-Series
Vintage 1977 Roland GS-500 Synthesizer Controller Guitar with GR-500 Synthesizer ( GS500 / GR500 ). | Reverb
1977 | Roland GR500: Overview – Rob OReilly | Expressiv MIDI Guitars
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GR-500 | Electronic Music Wiki | Fandom
Roland GR-500 Guitar Synthesizer with case 1977 Amazing Vintage SH series synth and guitar | Reverb Canada
