Bidspirit auction | Johann Hendrik van Mastenbroek (1875-1945),

Johann Hendrik van Mastenbroek (1875-1945), Six ‘Sketchbook drawings of flat-bottomed boats and harbour views' - Johann Hendrik van Mastenbroek (1875-1945), Six ‘Sketchbook drawings of flat-bottomed boats and harbour views' all signed 'J.H.v.M.'. Black pencil on paper, approx. 8 x 9,5 cm (smallest), approx. 15,5 x 11 cm (largest) (frame: 35.5 x 49.5 cm).