The British Non-Denominated Definitive Series
A Study in Production Materials, Printers and Process
and the Resulting Varieties
Purpose: This is an exhibit of stamps which documents the introduction, variety and expansion of non-denominated or No-Value-Indicated (NVI) printings in the United Kingdom.
Treatment: Royal Mail introduced NVIs in 1989. Starting as a simple set of 1st & 2nd class Machin postage stamps, this effort has grown to encompass additional letter rates and National & Country stamp designs.
This period of stamp production encompasses many of the significant technological changes to UK definitives that continue to require a stamp to be a complex, multi-layered, mechanisation-interactive device. Forces compelling these qualities of modern UK definitives include Post Office service and cost considerations, regulatory, nationalism and environmental factors, security, ease of use and rate escalation - all across multiple printers. The chapters of the exhibit will explain at a specialist level the resulting evolution of the NVI definitives.
Scope: The exhibit includes Test, Proof, Trial and production printings of National and Country releases.
Exhibit Chapter Plan
Ch. 1 - Tests, Proofs and Trials, & Early Printings 1989-2005
Ch. 2 - A Convergence of Innovation 1993-1995
Ch. 3 - Evolution of Packaging, Fluor, Color and a New Non-Denominated Designation 1995-1999
Ch. 4 - Machin NVIs 2000-2008
Ch. 5 - Security, Forgeries and an Expansion of NVI Service Classes 2009-2017
Ch. 6 - Regional-Country Printings