I recently acquired this Waltham watch. It's a model1899, 16s, grade 630 from ~1906. Does anyone notice anything amiss????

It looks like the click pin is missing.

The hairspring appears white, which is unusual.

Solid balance, White hairspring.

You have it, It has a new replacement ?conel balance.

"Veddy Interesting" . . . Has it been converted to Double Roller?

Without talking the balance out, it sure looks like a single roller through my microscope.