1841 Sg 14 / spec ES11 - 2d Bright blue plate 3
Corner letters ( N H ) See guide line throught value & also looks like a Re-Entry with
marks in corner letters and in TWO PENCE not mentioned ib books.
Touching to good margins, just nice shade & Irish pmk looks like 20 
 
Cat £110++
 
Condition, Very fine used.