Mint Condition with Original Box and Certificate of Authenticity. Composition: 99.99% Silver. Weight (g): 31.39. Design: The Hudson Type 4-6-4 locomotive was introduced by Canadian Pacific in 1929 and its distinctive emistreamline design was developed during its first decade of service. The engine was fitted with a stainless steel boiler jacket and was painted in silver and royal blue. Royal crests were mounted on the front and tender sides while royal crowns appeared on the side running boards. Locomotive 2850 set a North American record by completing the 4,921 km (3,061 mi) tour on its own. In fact, all Hudson 4-6-4 semi-streamlined locomotives were fitted with royal crowns in tribute to the locomotive’s outstanding service.