Reply To: mainspring.

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pocket watch, dennison # are. width is 23. strength is 00. its an old Ingersoll cheapie. I have 546mm for length, I measured it, it was about 21 1/2 inches.. only number I have is 26682986. I found a match in an old bestfit book. Its t320-2 but I cant cross reference it ti nothing …. Thanks Randy for replying to me

bobpatReply To: mainspring.