https://www.radiomuseum.org/r/sony_betamax_video_cassette_recorder_sl_2405_711b.html
Betamax Video Cassette Recorder SL-2405 R-Player Sony Corporation; |Radiomuseum.org
Betamax Video Cassette Recorder SL-2405 Ch= 711B R-Player Sony Corporation; Tokyo, build 1983, 5 pictures, Japan, schematics, tubes, semiconductors, Sound
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