Seth Thomas "Regulator No. 4", C. 1917, when the movement was first introduced by the company for their No. 2 and No. 4 Regulators.
Anonymous (not verified)
23 October 2024
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Seth Thomas "Regulator No. 4", C. 1917, when the movement was first introduced by the company for their No. 2 and No. 4 Regulators.
They called it a Keystone shaped movement, with heavy polished plates, Graham dead beat escapement, maintaining power. It is fitted to an iron bracket...