Can anyone tell me if the Hamilton Ball 998E use the same mainspring as 950/992?

Thanks

Tom

Tom i belive these use the same mainspring as the 950e Hamilton that they were based on,I will take a look at my book later today but belive they are the same as the 950.

Thanks Samie, I picked one of those up & it is running great, I was just planning on down the road & I thought I would ask ahead of time.

Tom