countersigned
Meaning
of Countersign
Source: Webster's dictionaryExamples
The Proclamation which you have just heard read by the Governor-General's Official Secretary was countersigned Malcolm Fraser, who will undoubtedly go down in Australian history from Remembrance Day 1975 as Kerr's cur.
I, as second Prime Minister, and Samdech Krom Preah, as first Prime Minister, countersigned the royal decree and the late King-Father signed it on 18 December 1996.
One of editorial bosses countersigned the latter as I asked for a promissory note from the management.
The president can also exercise certain emergency powers, which must be countersigned by the appropriate cabinet minister.
On legal documents, an illiterate signatory can make a "mark" (often an "X" but occasionally a personalized symbol), so long as the document is countersigned by a literate witness.