σημαντήριον

τό
A. mark or seal upon anything to be kept, A. Ag. 609; dub. sens. in S. Fr. 432.9.
II. place for coining money, mint, Harp. s.v. ἀργυροκοπεῖον.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project