Mike,
Commiserations, I do think that fault should have been described by the auctioneer, after all it will reflect in the cost required to make good, so it should have been taken into consideration in the bid price.Caveat Emptor springs to mind.
Bruce Kent, oops sorry, Hotrack give me the name of your optician, I can see the line where the barrel fillets are soldered between the barrels/ribs.But I can see bugger all else.