Thread: Combined Ops formation sign – good or bad? Dates of use?
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Old 18-10-22, 07:23 AM
Mike B Mike B is offline
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Join Date: Dec 2010
Location: North West
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Hi Graham
Please be careful with burn test - when referring to 'flaring' I meant going bright when put under UV light in the dark.
Not a 100% reliable test, but often picks up synthetic thread to help date items.
All the best
Mike
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