ἀποσφράγισμα
From LSJ
κατὰ τὸν δεύτερον, φασί, πλοῦν τὰ ἐλάχιστα ληπτέον τῶν κακῶν → we must as second best, as people say, take the least of the evils
English (LSJ)
ατος, τό,
A impression of a seal, Plin.Ep.Traj.74, Ath.13.585d; also, the seal itself, signet, LXXJe.22.24. II sealed copy, IG12(7).237.69 (Amorgos, i B. C.). III stamped receipt for goods taken, PRev.Laws31.19 (iii B. C.).