Complex sentence: The five cent coin was first issued and a silver coin of 80% fine in 1866, it had a diameter of 15 mm, thickness of 0.80 mm and wighed 1.34 grammes with a reeded edge.
Split into simpler sentences: The five cent coin was first issued as a silver coin of 80% fineness in 1866. It had a diameter of 15 mm, thickness of 0.80 mm, weighed 1.34 grams, and had a reeded edge.