London: Europe's biggest block of flats, Dolphin Square, overlooking the Thames from The Embankment in London's Pimlico, has been put up for sale. The tenants of Dolphin Square may put in a bid when tenders are invited for the property in the near future. It was reported today that the valuation placed on the property is visualised by the owners Dolphin Square Ltd., As being something in the region of ?,5000,000.. 13 August 1962