imperforate

When a liquid is to be separated from a liquid, the receptacle must be imperforate.

We also find all values occurring in an imperforate condition.

The first stamps were imperforate, necessitating the use of scissors or other instrument in separating them.

Although made and approved, this stamp is said to have been withheld from issue in this imperforate condition.

The 2nd or 1851 issue, as it is called in the circular, actually consisted of two series, the imperforate and perforate.

Attempts are, however, made to palm off trimmed reprints as imperforate specimens.

The shell is thick, imperforate (no umbilicus), and usually has flat, spiral ribs.

The stamp is nearly square, and the specimens possessed by our correspondent are imperforate.

The inverse ratio of seven to one for a catalog value would make the perforated stamp list $42 with the imperforate at $6.

The inverse ratio of seven to one for a catalogue value would make the perforated stamp list $42 with the imperforate at $6.