Should mainsprings be routinely replaced on an antique clock when servicing?

A mainspring’s purpose is to provide motive power for the wheels to move in a clock train. All mechanical clocks require a power source and the power source may be by weight or spring. Mechanical clocks that have mainsprings will have one, two, or three winding points which, once wound provide power for a clock’s … More Should mainsprings be routinely replaced on an antique clock when servicing?

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