Tony,
No worries, I thought you might like it so removed it, took pics .... and then forgot to email them to you
Looking at it, it would give a pencil beam effect, thought it was pointing forward along the chassis towards the winch area so dont know if its a convoy light or rigged up for operating the winch at night, it was fitted to the rear chassis crossmember with a domed bolthead, looked exactly like the rivets on the chassis but it was threaded and had a nut underneath.... maybe someone can confirm what it is ??
Sorry Guys, tried uploading pic and would not load, TONY, just emailed you the pic, maybe you can upload it