Here are some examples of varieties found in Irish Commemorative Stamps. For a larger example click on the stamp (or sometimes the captions). The following abbreviations are used in the descriptions. "Scott" or "Sc" for " The Scott Standard Postage Stamp Catalogue", "MW" for The MacDonnell Whyte Stamps of Ireland Specialized Catalogue", and "Hib" for "The Hibernian Specialised Catalog"
1959 Arthur Guinness
Scott #171, Hib C65b
Hairline under curl of wig
R 1/3
1960 Europa
Scott #176, Hib C70a
Retouch on "U" of "EUROPA"
1961 Aer Lingus
Scott #177, MW C71a
Dots in foot of "R"
R 9/7 Plate 1B
This issue is laid out in left and right panes of 6x10. The variety is on the first stamp of the second row from the bottom of the right pane. If you have a plate # block of 4 of Plate 1B, you have the variety.
