Hans Purrmann (Speyer 1880 – 1966 Basel). ”Blick auf den Luganer See (Montagnola)”. 1950 Watercolour over pencil on wove paper. 49,5 × 60 cm (19 ½ × 23 ⅝ in.). Signed in the lower centre within the image: H. Purrmann. Lenz/Billeter W 1950/25.– [3336] Provenance: Heidi Vollmoeller, Zurich / Private Collection, Switzerland