Southern Pacific Prairie Mountain Wildflowers Syracuse Econo-Rim dinner plate. Of the many china patterns used by America's railroads, Southern Pacific's "Prairie Mountain Wildflowers" pattern or "PMWF" is one of the most popular among collectors. The pattern features a white base color with multicolored flowers in shades of red, yellow, green and blue. Southern Pacific used this as the common, everyday 9 7/16” diameter dinner plate. The date code shows that this was built in 1946. At certain times the SP ordered china without the RR backstamp as a cost saving measure as the backstamp cost a few cents more. With or without the backstamp they both saw dining car service. This is in very good shape with only very light utensil marks. If it doesn't meet your expectations, return for a full refund, less shipping.