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grimpil

OBTAINING A REPLACEMENT MAINSPRING

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Greetings, I am brand new to this world having bought an old pocket watch at a car boot fair. It doesn't work so I challenged myself to get it working and have been teaching myself via online videos and books. Now I'm hooked! I bought an old book in a second hand book shop for £2 called Practical watch Repairing by Donald de Carle. The watch is small and has been converted to wear on the wrist by having 2 lugs soldered on, but the winder is still at 12 o'clock so it must have been a bit awkward to view really. There is no makers name, but it is a silver case and this dates to 1910. the movement is swiss, case English. Roman numerals. Anyway, I have stripped it down and it has a broken mainspring so I'm looking to buy a new one. I'm finding it a bit confusing when searching and want to get the right one or one as near as possible that will it. I've successfully measured the height, thickness and length using a digital calliper. Where is the best place that I can get a replacement mainspring? Some are noted in sizes beginning with the letter M, but that means nothing to me. All advice gratefully received from those with more experience than I. many thanks.

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Try cousinsuk. They have a piece where you enter the numbers. Is there no numbers on the movement? Always a pain when none to find. Another way of possibly telling what movement it is, is a picture of each side of movement, but if stripped down male it harder. Still try cousinsuk first might have what u need.

 

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  welcome to the forum.   thats a good book for vintage watches.   if the broken main spring is long enough;  it would be good training to re-form the spring end via the book.  then look for any other problems..   good luck.  vin

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Thanks stdape, I'll take a look at them and also search for any other numbers.

That's good advice Vinn, but it's gone in the middle. Still might be worth a try just to practice and see if it actually drives the barrell whilst I source a replacement. After all this being my first piece and cheap it's not precious to me.

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