The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Piero della Francesca. Details. The Nativity. National Gallery
National Gallery. The Nativity. Henry Stone and Son Ltd. Card No. 1086. Piero. della Francesca
Francesca. The Nativity. National Gallery. Trustees by Waterlow and Sons Ltd. London
London. The National Gallery. Baptism of Christ. Della Francesca. Piero. The Great Artist. The Bridgeman Art Library
Piero Della Francesca. The Battle of Pons Milvius. The River Tiber. Scala
National Gallery. Nativity. P. Della Francesca. Waterlow
National Gallery. Nativity. P. Della Francesca. Card No. 1086. Waterlow