I am cleaning a 16s sangamo 19 jewel model 9 and have a question on the mainspring..using the Swigart #,s i have the 47313 and 47314 springs which is 2.70mm wide x20-1/2in. long and .17mm thick..the old spring is the same size far as the length ,width and thickeness but with a T end like the 47333 spring..

anyone have a number on the correct mainspring for this watch .
thanks in adavance

Samie,
C&E Marshall has the 47315 spring listed for the 4th through 9th models with 19 jewels.This has a t-brace end.The measurements are
2.70 X .18 1/2 X 20 1/2 ".
I don't have an Illinois catalog at home.
Hope this helps,
J Smith
PS how did the dial work?
JS