The Kalo Shop pendant necklace

The Kalo Shop
pendant necklace
Chicago, Illinois, circa 1920
sterling silver, blister pearl
stamped marks
pendant: 11/16"w x 1 1/16"h; chain: 22 3/4"l

Provenance:
The Paul & Terry Somerson Collection of 20th and 21st Century Metalwork and Jewelry
Condition Report: Minor surface scratches, typical of age, use and polishing. Pearl without any issues and nice iridescence. Surface dirt and polish residue in the crevices. The back side engraved Julia / 1920.