RALPH, Penelope (2), 'Comfrey (Symphytum Officinale),' 19/12/1978 (27.5x21.5cm); & 'Black Cherry Plum (Prunus Cerasifera Nigra),' 30/11/1978 (24x20cm) W/Clr (2) PROVENANCE: Estate Late Robert Neumann, Sydney.Estimate $100-200