My son has been gathering beer coasters for a while, and so have I. Many of the ones I have I picked up when I lived in Germany, which was 20 years ago. My son brought over a grocery sack full of coasters, which turned out to be about 260. I dug out all of mine, and had about 150 more, so just over 400 altogether. It turns out there were a lot of repeats, mostly doubles, but there must have been 50 Guiness coasters. After sorting and removing duplicates, I ended up with almost 300 coasters. Here is most the ones from my son:
And here are most of mine:
I actually had more than would fit in my basement. I ended up stapling 266 coasters to the top of the wall.
I see I need to dust on the top of the molding... :)