General Context Definition

Helecon

A chemical substance of the zinc sulphide group added to printing ink to facilitate electronic sorting of mail.

Related Philatelic Terms & Vocabulary

OF PHILATELIC TERMS

Term used for certain stamps produced by De La Rue for Great Britain 1862-1880 from plates which were not put into normal production

Design The artwork approved by a postal administration and passed to the printer for production.

Basic equipment to aid collecting in addition to stamp albums, stamp hinges, Watermark Detector, etc

Mark A handstamp applied to international letters prior to 1875 showing the charge to be collected from the addressee

Halfpenny Tax A charge made by the British Post Office before 1840 on letters transmitted in