R30085 Hornby NCB, Sentinel, 0-6-0, Stanton No. 57 - Era 7

In 1959 Sentinel produced a prototype diesel shunter which was operated on the military controlled Shropshire & Montgomeryshire Railway. In total 17 were produced and operated quite successfully during that year. 1963 saw the introduction of the 34 ton chain drive 4 wheel Rolls-Royce diesel powered Sentinel Shunter rated at 233 bhp which was later uprated to 255bhp.