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Thank you Buenchico and Frank97. Thatsmethatis, I was searching using words like iron girder, conceptual sculpture, giant iron sculpture etc.
My grandson is doing Art at uni and we have been discussing some particularly weird stuff termed art such as "vomit painings" one of which one of the four dealers purchased on Four Rooms tv. I was gobsmacked and then looked up the erm "artist?" Still gobsmaked!