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RAF filter room plan position counter '4'

SOLD

Code: M26505



Air Ministry Reference 4M/13, Headquarters Fighter Command Stores Reference No. F.R/1.  Incredibly rare Filter Room plan position 'counter' used to display important information relating to an enemy raid.  When details of aircraft were received at Group Filter Room level, the information was interpreted on a map table.  Circular counters like this were produced in seven colours and marked with a number to one side and corresponding dots to the reverse.  Manufactured in an early plastic, approximately 1.5cm diameter, black with white number '4' /dots.  Filter Room plotting equipment is even rarer to find than that of Operations Rooms.  Discovered at the Filter Room of RAF Watnall, Headquarters of 12 Group Fighter Command during WW2.  We have literally a handful of such items, most of which we are keeping.  This one differs slightly in having engraved numbers/dots.  Good condition.  Stock code M26505.

NB Map shown for illustrative purposes only,