Main Spring

Good day.

This is my first thread, so regards to all.

Few years ago I got IWC cal52/53 H6. The main spring was, and is, short, so it works about 10 hours. Functional but short. 

I finaly want to buy the new spring. But, when I spoke with some watchmakers in Split, Croatia, all of them are too busy, too young, this and that. On internet also many different info.

I kindly ask your help. I should be thankfull for correct measures of the spring so I buy the right one.

Best regards and thank you,

Daniel

PS. I am not a watchmaker, just enthusiast with limited knowledge.                                                            

Welcome to the forum, Daniel. Since your old spring is too short to measure reliably, I'd suggest asking your watchmaker for the barrel diameter, height and arbor size — with those numbers, a good parts supplier can match the correct spring for the cal. 52/53. It may also help to post a photo of the movement and its serial number here; the vintage experts on this forum are very good at narrowing down the right specs. Good luck, I hope you get it running to a full power reserve.

Hello Daniel, welcome to the forum. One more practical suggestion: since your old spring is too short to measure directly, ask a watchmaker to measure the barrel instead — the inside diameter of the barrel, the arbor diameter, and the available height. With those three numbers a parts supplier can size a correct replacement even without the original spring dimensions. Also worth noting: the cal. 52/53 is one of the more common IWC pocket watch movements, so a watchmaker who specialises in pocket watches rather than modern wristwatches is much more likely to recognise the calibre and have the right spring in stock. If you can post a photo of the movement and its serial number, several collectors here can usually confirm the exact reference. Good luck, these are lovely movements when they're running at full reserve.

Dear all.

Thak you for kind replys.

Finaly, I found an old watchmaker who knows right measures and he will order it for me.

Any way, thank's once again.

Regards,

Daniel

Glad to hear you found a watchmaker who knows the right measures for the cal 52/53 spring. As a newcomer to mechanical watches, stories like this are a good reminder of how much hands-on knowledge sits in this community. Hope the new mainspring brings it back to a full power reserve. Enjoy wearing it once it's sorted.