This was a production car, not too may made, but not a self built one off.
"The car was priced under its competition, selling for $295 for the 1916 model. Hall reports that orders were received “for his vehicle from India in February 1916 and additional records indicate the auto business was still active in 1922.” Richard Spooner, Walter’s grandson, recollects that 15-20 cars were built and shipped as far away as Australia and China."