The rosary is used by some other groups besides Catholics, although it is most commonly associated with them. Churches in the Anglican communion and some Lutheran churches use them, as well as some other groups. While I agree he is most likely Catholic, I wouldn't rule people out on this basis.
I agree that it looks like a freebie rosary, often given out at Easter services or by missionaries.
I don't agree that the ring on a chain is a rosary ring. I only count 9 "beads" around and a rosary ring would have 10 plus a small cross.