Constat \Con"stat\, n. [L., it is evident.] (Law)
   A certificate showing what appears upon record touching a
   matter in question.
   [1913 Webster]

CONSTAT, English law. The name of a certificate, which the clerk of the pipe 
and auditors of the exchequer make at the request of any person who intends 
to plead or move in the court for the discharge of anything; and the effect 
of it is, the certifying what constat (appears) upon record touching the 
matter in question. 
     2. A constat is held to be superior to an ordinary certificate, because 
it contains nothing but what is on record. An exemplification under the 
great seal, of the enrollment of any letters-patent, is called a constat. Co.

Litt. 225. Vide Exemplification; Inspeximus. 
     3. Whenever an officer gives a certificate that such a thing appears of 
record, it is called a constat; because the officer does not say that the 
fact is so, but it appears to be as he certifies. A certificate that it 
appears to the officer that a judgment has been entered, &c., is 
insufficient. 1 Hayw. 410.