More information on #408 London Dome by S North
Cartouche is stamped:
EARPHONE
PATD USA MAY 4 1880
CANADA MAR 11 1881
USA JAN 1 1883
IMPD APR 2 1887
S NORTH
SYRACUSE NY

item is also marked
2262 - I guess the serial no
2 - I guess the size

I have the patent drawing on the history page



Ear Trumpets, the Packington Collection
SY10, Shropshire, UK
01691830296