Jewelry & gold · a closer look
Long & Koch Co. mark: K 10K PAT, c. 1915
Mark details
- Maker
- Long & Koch Co. →
- Period
- c. 1915
- Wording
- K 10K PAT
- Appearance
- star
- Place
- Newark NJ, United States
Dating cue
The source entry lists c.1915.
Jewelry & gold · a closer look
The source entry lists c.1915.