RA 8240A BR(M) 4 ASPECT SIGNAL BOX HANDLAMP Staffs & Tablets one this key was withdraw

one this key was withdraw from the instrument the signale line key token system was disabled preventing the signalmaen to withdraw token keys

This publication is packed  with 408 pages of timetables and other details

The case is stamped G

This is the best example of the classic Great Northern Railway single needle  block telegraph instrument

After the war

RA 8240A BR(M) 4 ASPECT SIGNAL BOX HANDLAMP Staffs & Tablets one this key was withdrawA less common BR(M) 4 aspect signal box handlamp , this handlamp has the additional yellow shades which would be issued by the signalman to a fog signalman when appointed to be positioned at the Distant signal. This lamp has the standard yellow painted top to make it distinctive from a standard red green handlamp. This item is in lovely ex railway service order with all shade in undamaged condition.