ZERO Otto Piene Telegreen. 1969. colour silkscreen on light wove cardboard. 40 x 40 cm (61.8 x 44 cm). Signed, dated and numbered. Mounted in dots under passepartout. - Very delicate and even browning due to the paper, the lower corners verso with traces of previous mounting. Extremely well-preserved overall. Splendid, velvety print in vibrant colours with margins. Rottloff 72 - One of 100 copies. Colour serigraph on light wove card. Signed, dated and numbered. Spot-mounted under mat. - Very delicate and even browning due to the paper, verso the lower corners with traces of previous mounting. Overall very well preserved. Splendid, velvety impression in bright colours with margins. - One of 100 copies. 900