Lewis Short
signātor (noun M) : id..
* A sealer, signer.
* One who attests a will by sealing it, a witness to a will (mostly postAug.; not in Cic.): ex illis testes signatoresque falsos commodare,Sall. C. 16, 2: signator falso,a forger,Juv. 1, 67; Suet. Aug. 33; id. Tib. 23; Val. Max. 7, 7, 2; Dig. 18, 3, 8; Vulg. 2, Esd. 10, 1.
* One who stamps money, a coiner, Inscr. Grut. 1066, 5; 1070, 1; Inscr. Orell. 3229.
Charlton T. Lewis, Charles Short, A Latin Dictionary