| Level | Item |
| Reference Number (click to see whole series/group) | 13A84/7/231 |
| Extent | 3 items |
| Title | PRINTED NOTICES WITH REFERENCE TO A SPECIAL PAPER INVENTED BY SIR WILLIAM CONGREVE TO PREVENT FORGERY OF BANKNOTES |
| Date | 1821 |
| Description | The notices also mention that coloured stamps will be issued for country banknotes by the Stamping Office at Somerset House. |
| Original Reference | D 0091 |