Originally Posted by
AZORCH
ca. 1984 or 1985 Shogun 2000 Touring Model, serial number 555084 stamped into bottom bracket. Any idea why the serial number format looks so different? (i.e., no letters in the code.)

The obvious answer is that it was manufactured by a different contractor. If you look back though the thread, you'll find that are several different serial number formats, indicating that Shogun didn't have any allegiance toone particular manufacturer and probaly allocated contracts primarily on price. On the other hand, are you sure that one or two of those "5"s aren't "S"s?