Help me identify my Teapot :)

I found this teapot at a thrift store yesterday. It caught my eye because of its odd shape, which is a little larger than most teapots, with a rectangular shape. There is a lot of detail and the color is in good shape. There is a letter " B " stamped on the bottom. There is another stamp/ marking on the bottom but I am having trouble making out what it is... It looks like it says " W B & Co. " but could be a little different. Any further information would be greatly appreciated. Thanks