Thread: Mk. XX vs Mk. 20
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Old 1st October 2010, 19:49
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Alter Hase
  
Join Date: Jan 2005
Location: Bordeaux (France)
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CJE
Mk. XX vs Mk. 20
When did the British Air Ministry change the roman numerals of aircraft versions for arabic numerals?
And why?

Thanks in advance.

Chris
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