inscribed in purple fibre-tipped pen on reverse u.c.: "Autumn Tint Explosion" stamped in purple ink on reverse u.c.: SIR GEORGE F. POLLOCK, BT., F.R.P.S., / THE WESTCOTT ART CENTRE, 5 MAIN ROAD, WESTCOTT, / NR. DORKING, SURREY. / DORKING 4361 inscribed in fibre-tipped pen on reverse l.r.: George F. Pollock (ge F. Pollock underlined)