Page 140 of Roy Ehrhardt's book on Waltham packet watches, bottom row, middle picture (Vanguard, nickel). Can anyone give me the part number of the regulator? Thanks. I have a Waltham Vanguard 16s, up/down indicator with a broken regulator s/n 26128747.

Mark

In the 1948 edition of Waltham watch & clock material catalog they list several different types, it has the following listed under 16 size 1899 & 1908 Models;

4884 regulator straight
4885 regulator used with whip lash springs 4888 & 4889
4886 regulator patent steel
4887 regulator patent gilt
4888 whip lash regulator spring, steel, used with regulator 4885 (screw 257)
4889 whip lash regulator spring, steel, with screw, used with 4885 regulator (screw 257)
4889A Regulator, steel, 1908 pattern
4889B Regulator Bridge & screw 9screw 257)
4889C Regulator Bridge (screw 257)

Tom

Tom: Thanks for the info. I am having a little difficulty applying a description to the one shown in Roy's book, page 140, bottom row, middle picture.

Sorry Mark, I don't have that book so I can't look at the photos.

Tom

I don't know if this will help, but here is page 49 from the 1940 Waltham Watch & Clock Material catalog....

Regards,
Jerry