I have 2 elgin 6 sz watches with the male stem.I looked up the ser numbers and one is grade 97 and the other is grade 101.
I was wondering if the mainspring is interchangeable?
Thanks for all help.

IHC Member 261
Chapter 111,Ottawa
NAWCC Member 158976,
Nepean, Canada

Kevin,

Recheck the serial number of the grade 97 watch because I believe a grade 97 is an 18s.

Your grade 101 uses an Elgin 824 spring.

John D. Duvall
Vice President, Education

I have a 97 also its 18s full plate. Regards TED

Hi Guys i just looked it is Serial #513908.
I will also go to the Elgi site and re-enter the ser #

IHC Member 261
Chapter 111,Ottawa
NAWCC Member 158976,
Nepean, Canada

Yes it is a grade 67, both watch movements look alike though the grade 67 is older.
John are the springs interchangeable and are they not too hard to find ?

IHC Member 261
Chapter 111,Ottawa
NAWCC Member 158976,
Nepean, Canada

Kevin,

The grade 67 also uses the #824 mainspring. I checked dashto.com and Tom has 35 Swiss made white alloy springs for $4.00 ea and I'm sure Uncle Larry has them too.

If you visit dashto.com, look for item number 202.103.

Good luck!

John D. Duvall
Vice President, Education