While I think of it, the second line of the RCAF Data Plate reads "SEC/REF. No.", which for this set happens to be: 10EU/5479.
Can anyone enlighten me as to what "SEC/REF. No." is and what it relates to? My current guess is that it might be a specific RCAF coding or identification system, and the 'REF." is probably short for "REFERENCE". The "SEC" baffles me.
David
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