10BNCH Mainspring

Does anyone know what mainsprings are interchangeable for a 10BNCH?

Reverend Rob's picture
Reverend Rob
Posted September 21, 2013 - 10:59pm

Panel Member

According to Bestfit, this is a sealed barrel. What you'd have to do, is remove the spring from the barrel, and directly measure it to find its dimensions. Then you can either order one that is the same, or look up the specs to see which ones are the same or similar. 

FifthAvenueRestorations's picture
FifthAvenueRest...
Posted September 22, 2013 - 4:47am

Aaron,

There is no Bulova part interchange for the 10BNCH Alloy Mainspring.

Jules Borel shows the spring as in stock and also lists a (steel) replacement as:

1.30-.09-280 8

or

GR3220

JP
Posted September 24, 2013 - 12:47pm

Panel Member

Hi Arron

Do you still need the mainspring for the 10BNCH ? I have a NOS Buloloy and would be happy to sell it to you.

John

JP
Posted October 7, 2013 - 12:55pm

Panel Member

Aaron

Where are you?? I have the mainspring you need.

John

Aberlow
Posted October 8, 2013 - 12:38am

Hey, 

I have returned. I actually found one in my stock! 

JP
Posted October 29, 2013 - 4:19pm

Panel Member

OK