The coding on Murray built Sears bikes, from the late 50s to the 70s, is this. The second #, in this case 46211, is the Sears catalog number. I found this one on a 1965 page, the full # is W6 A 46211N. It's below the top line Spaceliner, described as a "fully equipped middleweight with lots of chrome", and sold for $35.45. -Adam