Soup bowl in the Indian Tree pattern which is marked as shown. Piece has the Buffalo China mark used from 1915 until early 40's.
Richard Luckin pictures this pattern on page 202 of Dining On the Rails labeled NH-3 Indian Tree and describes it as "always back stamped", which this is.

Piece measures about 8&7/8 inches wide.
Piece is in good used condition showing a little wear. Edges have some rust spots where the glase has worn and iron in the base material has oxidised. There is some utensil wear and scuffs to the glaze but overall pretty good condition.
 I have 7 of these in basically the same condition. The back stamp varies a little so you will recieve the exact one shown in the photos (E) . This backstamp is a little blurry, mostly the part about the distributor, but still fully legible.

Take a good look at the photos as piece is being sold as-is.