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New old Stock Illinois 16 size T end ( all 60 hour models) Mainspring 1 piece/unit sold during this auction T-end, thickness ? To replace a mainspring as pictured, comes from a dry storage, very light spot of rust or oxidation. Good Luck,
	Ref.: 6867 + 8078	POSTAGE FEES & HANDLING - USA Postage fees will be paid by buyer	SATISFACTION GUARANTEE Return Privilege: 14 business days upon reception

New old Stock Illinois 16 size T end ( all 60 hour models) Mainspring 1 piece/unit sold during this auctionT-end, thickness ?To replace a mainspring as pictured, comes from a dry storage, very light spot of rust or oxidation.Good Luck,