I think the balls are Mexican in origin, moved from there on a flat bed truck! I did find the article fascinating tho. Had not seen anything about the balls of Costa Rica before. Very interesting.
Ticker, we've talked about putting the balls back in the front garden, set in cement. Just haven't asked the insurance company about it yet. We've lived in the same house for over 30 years, and ball rolling has been the only vandalism we can ever remember. There must be some kind of magnetic pull to a teenage boy to remove 'em! No use tempting fate again.