Some coils continue to work over amazing amounts of time. Some do not. My 1972 Honda SL350K2 has an original coil, one of the two anyhow is from the factory.
My next door neighbor's brand-new 1975 AMC Pacer had a failed coil and a cracked distributor cap at just 49 miles on the odometer. Boy we built some quality American cars in the 1970s.
Talk about parts that last? The tiny high beam indicator bulb on my 1972 SL350 is original. Works perfectly.