(i) pencil on paper
(ii) pastel and charcoal on paper

(i) signed and dated 'Roby Dwi Antono 20' lower right
(ii) signed and dated 'Roby Dwi Antono 19' lower right

(i) work 41 x 40 cm. (16 1/8 x 15 3/4 in.)
frame 52.5 x 51.5 cm. (20 5/8 x 20 1/4 in.)
(ii) work 25.5 x 26 cm. (10 x 10 1/4 in.)
frame 39.4 x 40.4 cm. (15 1/2 x 15 7/8 in.)

(i) Executed in 2020, this work is accompanied by a certificate of authenticity issued by the artist.
(ii) Executed in 2019, this work is accompanied by a certificate of authenticity issued by the artist.