What is Crimen Falsi Dicitur, Cum Quis Illicitur, Cui Non Fuerit Ad Haec Data Auctoritas, De Sigillo Regis Rapto Vel Invento Brevia, Cartasve Consignaverit?

Legal Definition
The crime of falsifying applies to one to whom the authority has not been given who has signed writs or charters with the king’s seal, stolen or found.
-- Ballentine's Law Dictionary