
Undated
Keystone, Keystone Watch Case Co., Keystone Co, The K.W.C.Co.
"Keystone", "Keystone Watch Case Co.", "Keystone Co", "The K.W.C.Co."
Designer marks
From 1885 · 2 marks.

Undated
"Keystone", "Keystone Watch Case Co.", "Keystone Co", "The K.W.C.Co."

Undated
"Keystone", "Keystone Watch Case Co.", "Keystone Co", "The K.W.C.Co."
Keystone Watch Case Co. was founded in 1885. They produced pocket watch cases for various watchmakers, eventually purchasing the rights to use the E. Howard name in 1902.