The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
The Polar Bears Bristol Zoo. 45356. Harvey Barton and Son
The Polar Bears. Bristol Zoo. Harvey Barton. No 45356. 1956
Bristol Zoo. The Polar Bears. Harvey Barton
Bristol Zoo. The Polar Bears. Harvey Barton. 1962
Bristol Zoo. Polar Bears. J. Arthur Dixon
Polar Bears. The Zoological Society of London. M. Lyster
