Complex sentence: The Albany Charter coin is 30.6 milimeters in diameter and weighs 12.5 grams, with a reeded edge, and was 90% silver with 10% copper.
Split into simpler sentences: The Albany Charter coin is 30.6 milimeters in diameter and weighs 12.5 grams, with a reeded edge. The coin was 90% silver with 10% copper.