Jan Lot 21- Waltham 22 Size Chronometer White Alloy Unbreakable Factory #2275 Mainsprings
$3.00
These are extremely desirable and hard to find mainsprings for the 22 size and 8-Day Waltham collector, dealer and repair person. These are very expensive when purchased one at a time from a horological material house that is even if you can find them.
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