Stiffened GOLD UI W W I I Watch CaseSM f...

The Sign of a Watch Case

This Keystone is the identifying sign of the best watch case made-no matter what it costs. It stands for worth and wear-for beauty equal to an all-gold case, at a much smaller price. The 

JAS. BOSS

Stiffened GOLD

Watch Case

is better protection than a solid gold case, because of its stiffness and strength. Better than any other case, because it ill last for 25 years with-out wearing thin or losing its beauty. A reputation of 50 years proves the value of the Jas. Boss Case.

Consult the jeweler. Write us for a booklet.

THE KEYSTONE WATCH CASE COMPANY,

Philadelphia.