Monthly registers of bills, warrants and letters stamped with the dry stamp of Henry VIII's signature, submitted to the king for clearance by his real signature. The dry stamp of the king's signature was used because of Henry VIII's disinclination to sign.
The volume provided a check on possible misuse of the stamp: the king checked each register and authorised that month's use of the dry stamp by signing the register with his own hand (inking in the impression).