Northern Irish Stamp Catalogues

Overview Northern Ireland Stamp Catalogues

Northern Ireland Stamp Catalogues (books)

Northern Ireland Stamp Auctions/Marketplaces

Ebay

Stampden Northern Ireland Stamps

Northern Ireland Online Stamp Catalogues

Michel (German/English) – Most complete online stamp catalogue with actual prices (subscription required)

Colnect (all language) – Colnect (premium) has auto-matching, best matches and an extensive free stamp catalogs