Hello again. Can anyone tell me what world coins were made by U.S. mint in 1968, or where I can locate said info. Have off weight coin from 1968 and do not know what metal it is, just that it is underweight. Coin weighs in at 9.7 grams. Full size slightly thin 1968d
Kennedy half dollar. Any guesses? What would be best place to have coin like this authenticated? The grading services or perhaps
ANA? Would like to know exactly what it is. Is it on foreign planchet, or is is some form of an experimental metal? Any help appreciated. Thanx