I recently picked up this JC Higgins( Monark built). I was able to find the Sears catalog number which dates it as a 1947 or 1948, and the Monark serial number, I have found 2 different charts for Monark and 1 shows it to be a 1947 and the other a 1948, so I am wondering if anyone knows any other way to find the exact year, also I have looked online and can’t find a Monark built JC Higgins with the same tank graphics, so I also am wondering how rare it is