Antique 1890s Star Brass/Westinghouse 6 1/4" Brass Railroad Memorabilia Steam Locomotive Air Brake Duplex Gauge Barn-find condition with heavy patina. Overall as-found appearance. Red hand appears to be missing. Size: Measurement is 6 1/4" diameter. Age: Manufacture date appears to be roughly 1890-1910. Appears to have a serial number of 322. Brand: Star brass / Westinghouse. Last Calibration Date: 4/14/64 written on dial. Railroad collectible. Railroad memorabilia. Railroadiana. Railroad Museum Collection. Railroad History.