Interesting, but yeah not much value. Most of those notes are low or the lowest denomination. The 5 Guilders, 20 Kroner, 500 Drachma, Irish Punt, 20 Francs and 5 Marks were all replaced by coins before the Euro and that sums it up really. The other notes are 1 step above the highest coin like the 100 Francs of Belgium and Luxembourg and the 2000 Lire of Italy.
Plus they are not all UNC and most look VF or even high Fine - basically I think someone did a tour of Europe in the 80s and took one note from each country to make up a souvenir collection and they got the cheapest. Had they done their homework and gone for UNC examples or higher face values, it would have some value.
Being 80s - probably a good chance the frame paper is acid and likely stained the notes or they will be stuck to the board as well.
I would realistically sell that for about $20 or so. Ask for $50 on
ebay - but you will get $20 or maybe even $30 easily. I mean no one would honestly fly to England or Ireland from America to cash in an old 5 pound or 1 punt note!