Buy Old watercolor sketch of Pierrefonds Castel 1910-1914

Old watercolor sketch The Pierrefonds Castel "Château de Pierrefonds" in Oise ( Nord-Est of Paris rebuilt by Violllet-le-Duc in the XIXth century).
https://en.wikipedia.org/wiki/Ch%C3%A2teau_de_Pierrefonds

It was drawn by Alphonse Dollé (1860-1942) a cousin of my grandmother who lived in North of France. He was a buy notary.

Dimensions : 24.5 cm x 31 cm. On the back the same sketch that did not like and was abandoned. He signed and located several years later in ballpoint pen. Drawn around 1910/14.

You can see here other drawings and paintings :
https://www.etsy.com/fr/shop/ruefedor?ref=hdr_shop_menu§ion_id=21054308