Potter Studio stick pin and cufflinks

Potter Studio
stick pin and cufflinks
Cleveland, Ohio
14K yellow gold, black boulder opal
stamped mark
8.9 dwts
stick pin: 1/2"w x 13/16"d x 2 1/2"l

Provenance:
The Paul & Terry Somerson Collection of 20th and 21st Century Metalwork and Jewelry
Condition Report: Light surface scratches, typical of age and use. No issues to the stone. Using a Kee Electronic Gold Tester, all items read as 14K gold. Stamped (each): Potter / Studio.