Sign-manual, ROYAL, the superscription of the sovereign, which must be adlibited to all writs which have to pass the Privy-seal or Great Seal. When attached to a grant or warrant it must be countersigned by one of the principal secretaries of state, or by the Lords of the Treasury. For certain deeds of minor importance a cachet or stamp of the royal signature is used.
Sign-manual
Chambers's Encyclopaedia, Volume 9: Bound to Swansea, p. 446
Source scan(s): p. 0459