The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
The Old Gate Carisbrooke Castle. I. W. J. W. S. 752. J. Welch. 1909
10. Carisbrooke Castle. The Gate House. Ministry of Works. Crown
Carisbrooke Castle. The Gate House. H. M. Office of Works. The Rembrant Intaglio Printing. London
4. Carisbrooke Castle. The Gate House. H. M. Office of Works. John Swain
I. O. W. Carisbrooke Castle. The Gatehouse. Walter Scott. No 2186. RP
I. o. W. Carisbrooke Castle. The Gateway. Postcard