Inscription
lower left: (rows of calculations, upside down); lower right: Santis St. Gallen Treudenberg
Provenance
(Kunsthandel Ralph R. Haugwitz, Berlin); purchased 2001 by NGA.
lower left: (rows of calculations, upside down); lower right: Santis St. Gallen Treudenberg
(Kunsthandel Ralph R. Haugwitz, Berlin); purchased 2001 by NGA.
