The 82c stamp from 2008 shows the two ships, HMS Agamemnon and USS Niagara, that laid the cable connecting Trinity Bay, Newfoundland and Knightstown on Valentia Island. It took several attempts to successfully connect the cable.
Initially, messages were sent by an operator sending Morse code. The reception was very bad on the 1858 cable, and it took two minutes to transmit just one character (a single letter or a single number) The first message took over 17 hours to transmit, which though frustratingly long, was still faster than the previous 10 days by ship.
How many of you remember the delay on transatlantic phone calls which made conversations with the family from away a bit confusing?! It would seem as if both of you were talking at the same time and sometimes you would hear echoes of your own voice.
anyway, after your late night in Dublin you could look into some recovery time on Valentia Island here
This second stamp I am not quite so enamoured with. I like frogs, but this is perhaps a bit too green and dark. It was hard to see properly without magnification. The Common Frog is the only species of frog found in Ireland and is the most common of the three species of amphibians. Their population is declining so it is now a protected species. There is an interesting and informative article on them in the Irish Peatland Conservation which you can read here.
See more Irishness on stamps here