There was a fad about 15 years ago for pubs to be covered in signage and prices went through the roof, feel free to add places where there's some decent stuff on display.
The Mills Inn, Ballyvourney, Macroom, Co Cork.
Hells Kitchen Bar & Museum, Castlerea, Co. Roscommon.
http://www.hellskitchenmuseum.com/
Bridge Bar, Dingle, Co Kerry.
Headhunters Barbers, Enniskillen, Co. Fermanagh.
http://www.virtualvisit-northernire...+Galleries
I *think* Bunratty Folk Park (Co. Clare) may have signs, but haven't visited yet.
P.J. Dargan’s shop of Longwood, County Meath
&
Mary Lynch’s pub/shop at Carolstown near Mullingar
Flickr Link http://www.flickr.com/photos/238857...otostream/