Here are some examples of varieties found in Irish Postage Due Stamps. For a larger example click on the stamp. 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"
1925
Scott #J2, MW PD2c
Inverted "Q" for "O" in "Postage"
R10/1
1940-69
Scott #J6, Hib PD6d
Scott #J8, Hib PD8b
Break in top of upper banner
Aspirate (dot) missing on "p" of "pingin"
between the "e" and "n"
1978
Scott #J26, MW PD23a
Scott #J26, Unlisted
Broken left upper frame
This stamp has 3 characteristic flaws
R10/5
There is a large frame break right upper frame,
a smaller scratch in the upper left frame, and a spot