= From the former collection of Queen Juliana of the Netherlands, sold at Sotheby's in 2011.

Tholen, W.B. (1860-1931). Brievenbus, Kaag. Etching, 12,8x27 cm., signed "Tholen" in pencil and in the plate.

= Knuttel 60.

AND 2 others, i.a. an etching by JAN POORTENAAR.