The blue discoloration of the paper in early British stamps (see Bleute) produces some curious vagaries best seen from the

The word is used in its several dictionary senses, e.g. a stamp is issued or withdrawn from issue; a group

A perforator whose pins or punches do not gauge uniformly throughout its length.

May derive from a similar inversion of the paper before printing, but stamps printed for issue in booklet form in

Occur in much the same way, whether the surcharge is added in a printing press, or by hand-stamp.

Turned upside down. Stamps printed in two colours or requiring two printings sometimes have one of the impressions inverted, through

The wrong way round; cart before the horse. As in "double Geneva," cut the wrong way.

For stamps in coil form for delivery by automatic machines, the ordinary perforations tend to weaken the paper too much

The Italian term for engraving in relief as for typographical printing.

Engraving in recession, as in steel-plate or copperplate engraving, is In Intaglio; it is also applicable to photogravure. It is

A thin fine paper, imported chiefly from China, much used by engravers for taking die proofs.

The name of printer or place of printing, on margins of stamp sheets; sometimes on the actual stamps beneath the

(Latin for "let it be printed"). It was the custom in Great Britain, as each printing plate was completed, and

See Watermarks.

A stamp which has not been perforated or rouletted. Imperf. Between: a pair or more stamps lacking the perforation between