20+ years ago they were much more common place but with the age of electronic cash cards and online banking you see them less and less.
Once on vacation back in the States I had a wad of different notes in my wallet and some old work buddies of mine wanted to see what Swiss money looked liked. So I showed them the 10 and worked my way up to the 1,000 chf note. One of the guys was admiring it flipping over and carefully checking out both sides when he asked me "how much is this in real money..?" (meaning $). I'll never forget the look on their faces when I told them..