I've joined forces with the hobbyDB team to create a database of every Starbucks Mug ever made! You can use hobbyDB to manage your collection and wish list, show it off, find values for your mugs, and to trade, buy and sell. We currently have four volunteers and would love to have more join the team. If you'd like to help, contact the guys at hobbyDB.
Starbucks City Mugs 
Hello! I purchased the “Dublin” and “Ireland” mugs last summer while in Dublin. I am wondering if there are others? Would you know how to find out? Thank you!
We usually have current updates, or instant ones if collectors find out there is a new mug somewhere on the FB page. Right now, there is only Ireland and Dublin mug for Ireland.
https://www.facebook.com/media/set/?set=a.399616993433778.89927.237577116304434&type=3