This one doesn't look right, and I suspect it's a fake.
The metalwork is too clean and the welding too neat, but the actual aerial base No.9 doesn't look right. It should be a rubber moulding with stamped metal end pieces (plated steel or brass st the top end), but this looks like aluminium. Also the bottom section of the insulator looks like painted metal and I suspect the whole thing may have been turned on a lathe.
Caution advised if you were thinking of bidding on it.
(No, of course it's not mine!)
http://www.ebay.co.uk/itm/military-r...k/112200349043