A3: Wheatstone Linota type Anglo concertina

Keys: 30 keys + C drone + air button, caped metal buttons
Ends: Wheatstone design, flat or raised ends, rosewood, ebony or, raised ends in black hardwood
Bellows: 7-fold leather bellows, goatskin, in black, other colours on request
Tuning: C/G, C#/G# and Bb/F
Keyboard layout: Wheatstone system, changes on request
Levers: riveted, for fast action
Reeds: single steel reeds in brass frames
Reed pan construction: reed chambers are arranged in a circle
Size: diameter 160 mm (6.3 in.)
Description: crisp tone, fast action