Assay Office
CD
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Charles de Temple (1963 – 1996) | 1985 | 18ct white gold bracelet | Designer maker |
CJ
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Crinnan Jewellery Ltd. | 2019 |
CM
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Cavale Manufacturing Ltd (1981 to 1991 | 1991 | 18ct yellow gold dress ring |
CR
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | C N Rossfield (1975 – 1980) | 18ct gold dress ring | ||
 | C N Rossfield 1975 – 1980 | 2019 | 18ct white gold diamond set ring |
CS
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | CS * FS Cornelius Saunders & Frank Shepherd (Saunders & Shephard) 1910 | 2019 | Sterling silver item but also made gold jewellery | High quality maker |
 | Colin Seaton | 1977 | 9ct yellow gold ingot pendant |