Originally Posted by
old's'cool
Not sure where I found it originally, but as alluded above the serial number decoding scheme is simple assuming Miyata built or at least the same encoding. Initial letter denotes the year, I is 1980, J is 1981, etc. O would be 1986, if I can still count this late in the evening.
I think you might a better late night counter than I am a daytime reader
hehe thank you for the clarification! Looks like I have a 1986!