Maker

Item #

Size

Description

In Stock

Price

Buy

Seth
Thomas

JA652

18/S

18s Mainspring Factory # 536
width in mm 3.3, strength in mm 0.19
length inches 21-1/2, end T-BRACE

Yes

$25.00

Seth
Thomas

JA653

18/S

18s Mainspring Factory # 729
width in mm 3.3, strength in mm 0.225
length inches 21 1/2, end T-BRACE

Yes

$25.00

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