Here you go Derk....not far from me. You can grab one of those 19 sets from my shelf while you are out here. You know, one of those radios that you "don't need anymore". (Quote from about 5 years ago but now apparently rescinded).
I am going to guess it is the remnants of a mosquito, but only because of the wooden construction inside. I remember one of my cadet officers telling us about how the moths would eat the glue that held them together. That was back in the days when a lot of the cadet officers were ex-RCAF.
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