For those of you interested in Aviation, this is a fascinating and unusual item.
Air to Air refuelling is a tricky manoeuvre completed using a drogue. This consists of two parts, one on the refuelling craft and one on the aircraft being refuelled. The part displayed is the drogue reception coupling device. The cut away shows the internal mechanics of the internal pneumatics
More information on air to air refuelling here https://en.wikipedia.org/wiki/Aerial_refueling
Visually interesting piece with the military green original paint in good contrast to the red lines denoting the cut away area.
mounted on a solid oak base with riveted screws.
Part number stamped 5-33061-2
Size 50cm high and 34cm wide. Size of wooden base 36cm x 20cm