The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Kent. Dover Castle. Air View. Department of the Environment. H. M. S. O. Hindson Print Group. Crown
Dover Castle. Kent. Air View. Aerofilms. Ministry of Works
Dover Castle Kent. Air View. Crown
P. 2. Cliffords Tower. York Castle. Air view. Department of Environment. Crown. 1973. H. M. S. O. Larkfield Printing Company
Kent. Dover Castle. Air View From North West. Colin Richardson Printers. Crown
Kent. Dover Castle. Air View. H. M. S. O. Hindson Print. Crown
Dover Castle. Kent. Air View from North West. Colin Richardson Printers Limited. Crown