Most airborne jeeps lost their tops, bows and mounts -(and windscreens) on operations the idea was to loose the weight for transport in the glider
These items may have been brought up later by the second echelon - but never say never.......
The "Humber" sidescreens were somewhat different to the ones fitted to your jeep. See
viewtopic.php?f=5&t=55397The fittings bows and top were probably added when the jeep was disposed of by the Army or when it was refurbished for private sale
by the way - there's something wrong with those top bows. When stowed flat, they should both line up and lie around the edge of the body tub.....