a. Not perforated.
Usage examples of "unperforated".
And he can tell you offhand, not only their worth in the normal perforated and canceled condition, but also how their values vary if they are uncanceled, unperforated, embossed, rouletted, surcharged with all manner of initials, printed by mistake with the king standing on his head, or water-marked anything from a horn of plenty to the seven lean kine of Egypt.
To Moist’s astonishment, it was already covered with stamps - ungummed, unperforated, but perfect miniature copies of his drawing for the one penny stamp.