Wheatstone

[jdms]

@Jacokotze, the Wheatstone ledger on the Horniman Museum website says (assuming I'm reading it correctly) that this instrument is a Model 53, 30 keys, nickel ends, constructed on 23 July 1937 and sold on 7 October 1937.  That's as much as I can tell you, but no doubt there will be better-informed responses soon.

Edited February 26 by jdms