
Crane duet system. Serial number 625 (ends), 626 (bellows). Oval paper label: 'Crane & Sons, Liverpool, Patent Concertina no. 21730. Manufactured by Lachenal & Co., London.' 6.56" diameter flat rosewood ends, fully fretted, white fabric backing. 48 keys: 20 (8 black, 12 white) left-hand, 28 (10 black, 18 white) right-hand. Flat bone with black accidentals, stamped. Black leather straps, gilt embossed: 'Crane & Sons patent 21730,' one brass screw.