Pen-cancelled

Pen-cancelled Stamp officially cancelled or postmarked using a pen and which has been postally used.
Perf abbreviation for Perforation ...

Pen-cancelled - Adhesive stamp used postally and cancelled by hand-writing across it (not to be confused with stamps used on a receipt).
Penny Post - A local post, one penny being charged for letters delivered within its environs.

See also: Packet, Pair, Pane, Paquebot, Adhesive