United Kingdom 

Regional Issues - Northern Ireland

27th June 1968

Wilding stamp, as shown.

Catalogue numbers:

Stanley Gibbons NI 7 (XN6 - phosphor bands, no watermark)

Michel GB-NI 7
Stamp Number GB-NI 7
Yvert et Tellier GB 520
AFA number GB 408Du
Unificato GB 520