LNWR Signalbox Fletchers patent rotary block instrument (Railways)

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London & North Western Railway Signalbox Fletchers patent rotary block instrument, complete with bell mounted beneath. The case tapper mounted on the door with side plunger. A trafolite plate fitted “SLOW LINES BANGOR NO.2”. Bangor is located on the London & North Western mainline between Aber & Caerwen (Menai Bridge). Very good ex box condition.