Which countries were these euro coins minted in?

I'm looking for some help from someone who either is European, or has traveled extensively in Europe. I'm putting together a book of tangible world history for my niece as a gift for her 12th birthday (coming up in nine years, but you know, easier to find this stuff now than it will be then), such as presidential campaign buttons, newspaper articles about important historical events, etc., and I'm including both old and current US and world currency. In high school I somehow came into possession of a handful of Euro coins, and would like to include these, labeled by country of mint to show a little of how the EU works. Some of them are easy to figure out, like "ein euro cent" being a German Euro, but there are five I can't identify, four one-cent coins and one 20-cent coin. One has the head of an older-looking, heavyset man wearing spectacles, and on the right-hand side of the coin in the circle of stars is marked something that looks like a Christmas tree wearing a crown. One has a building that looks kind of like a castle with the letter "R" beneath it and a vertical line running through the R. One has a picture of what looks like an aspen branch. One has a mask with the letters (I think) "RF", and one has a picture that looks like the front of the Pantheon with no building behind it and a statue on top, set on a road vanishing in perspective. What countries are these? (Also, can anyone identify the country that in its own language in 1984 would have been "Confoederatio Helvetica" and tell me what kind of 5-cent coin this might be?)