Assay Office
HM
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | Hockley Mint | 2018 | Platinum diamond set ring | Casting House |
 | Hockley Mint (post 2010) | 2019 | Palladium diamond set ring | Casting House |
HS
| Mark | Maker | Dates seen | Seen on | Comments |
|---|---|---|---|---|
 | H. Samuels Ltd 1965 | 2019 | High Street Retailer |