My wife has a Miss Teen bike serial MA85966. I have been reading that this model was only made in 1966. However, the serial implies 12-31-1965. According to the serials on this site, December 30, 1965 ran MA80373-MA83412. So when would ours be made other than 12-31-1965?, which was a Friday that year. The charts dont show this serial number, but they were running about 3000 bikes a day that year. My wife is the sole owner since childhood. Any thoughts on how to rectify the serial number, dates and 1966 only? Thanks.