I found a Susan B. in a roll of Kennedy halves. I thought it was odd as today was my first day coin roll hunting. I grabbed 6 rolls and found on 1964 90% and a SBA. Just curious!
I've found about a dozen big copper King George pennies in the last year or so. Best non-half find in a roll was a 1943 Australian 1 Florin. It's even better than a US half, they're .925 Sterling. Here's a pic (not mine):
I have found all of the above in rolls of halves, plus a variety of foreign coins. I, especially like it when I find SBA's or the Presidential $1 coins. Makes up for some of the shortages which occur at times. HH