inscribed in fibre-tipped pen on reverse u.l.: P.CLARKE / ’68 / MAUVE ACROSS / YELLOW inscribed in fibre-tipped pen on reverse c.l.: C/O GALLERY A / 21 GIPPS ST. / PADDINGTON N.S.W. 202 / PHONE: 319720 inscribed in fibre-tipped pen on reverse c.r.: ACRYLIC inscribed in fibre-tipped pen on reverse l.l.: MAUVE ACROSS YELLOW / P.CLARKE / 1968