<a href="https://en.wikipedia.org/wiki/en:EMI" class="extiw" title="w:en:EMI">EMI</a> <b>BTR3</b> <a href="https://en.wikipedia.org/wiki/en:British_Tape_Recorder" class="extiw" title="w:en:British Tape Recorder">British Tape Recorder</a>
B.J. Morgan
CC BY 3.0
Museum of Making Music