The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
North Wales. Ceudwll Llechwedd Slate Caverns. J. Arthur Dixon
North Wales. Ceudwll Llechwedd Slate Caverns. Blaenau Ffestiniog. Merioneth. J. Arthur Dixon
North Wales. Merioneth. Ceudwll Llechwedd Slate Caverns. Blaenau Ffestiniog. J. Arthur Dixon
Gwynedd. Ceudwill Llechwedd Slate Caverns. Judges. C. 3387
