The Baker B grade engraving changed over the years. The early 1 pin side plate was etched; cut engraving started about SN 3000 c.1908
Long ago Ross Berck posted this nice comparison

Lots more images here
http://www.picturetrail.com/sfx/album/view/17434920From a 1900 issue of "The Baker Gunner" courtesy of David Noreen - "We do not guarantee that every "B" (or "A") grade gun will be engraved from just the same design, but endeavor to have about the same amount of engraving on each. On receiving an order from a customer we try to select first, one which will fill the specifications as to gauge, weight, length of barrels, drop and length of stock, and then conform to customer's ideas as to engraving , as nearly as possible from guns we may have in stock, but always consider engraving of secondary importance. You may receive a "B" (or "A") with a different design of border, or a duck or a dog in place of the two quail or a dog pointing game, we cannot tell as it is our aim to give a variety of designs."
Daryl or Researcher will no doubt clarify