Three tuning forks, 1871-1900

Three tuning forks, late 19th century.
Three tuning forks, in leather case, marked respectively:- "C518 Continental, John Brinsmead & Sons, London"; "C550 Society of Arts, John Brinsmead & Sons, London"; "C540 Philharmonic, John Brinsmead & Sons, London".
 
Year made :
1871-1900
Inventory number :
1934-492
 

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