Commemoratives.—A term applied to labels issued chiefly for sale to collectors, and commemorating the contemporaneous happening, or the anniversary, centenary, &c., of some often unimportant or almost forgotten event.

Compound.See Perforation.

Control.—An arbitrary letter or number, or both, printed on the margin of a sheet of stamps, for facilitating a check on the supply. Also used to denote a design overprinted on a stamp (e.g. Persia, 1899) as a protection against forgery.

A Pair of Great Britain embossed Six Pence.

A Pair of Cape of Good Hope Triangular Shilling.

A Block of four Great Britain Penny Red.