Hello Nicolas and welcome to the forum. The pilot's wing appears to be a workshop made "1940" issue, made as replacement badges for those pilots arriving in the UK after the fall of France. The 2nd Corps sapper's badge is a copy. The reverse of original badges has much more pronounced die stamp relief.
Regards,
Tony
All thoughts and opinions expressed are those of my own and should not be mistaken for medical and/or legal advice.
"Tomorrow hopes we have learned something from yesterday." - John Wayne
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