The Model B Standard was manufactured concurrently with the C and D for awhile (at least into 1909 if not later), and here's an example: This machine happens to be currently available on eBay (http://www.ebay.com/itm/391302258240?_t ... EBIDX%3AIT), but I'm posting it here for educational purposes. Note the low base molding and 5-screw bedplate.
George P.