Originally Posted by Cougrrcj

Not-so-fast! Miyata and many other Japanese manufacturers used SEVERAL different serial number formats throughout the years. Miyata moved OUT of Japan to Taiwan in the mid-later 80s, and that's about when the 512 was introduced. Best to use T-Mar's Asian Serial Number post (stickied above) but also liked here https://www.bikeforums.net/classic-v...ber-guide.html to determine where/when your bike was made...