The authenticity of this work was confirmed by the artist, March 2021. We are grateful to Mark Williams for his kind support.

Provenance:
- Barry Whistler Gallery, Texas, USA (verso with label).
- Galerie Schlégl, Zurich.
- Beurret & Bailly Auctions, 21 June 2017, Lot. no. 229.
- Private collection, Switzerland.

Condition: Overall in good condition. The upper centre with isolated spots of blistering in the blue area due to the technique. Barely noticeable rubbing at the centre left of the upper edge. The centre of the black surface with isolated areas of barely noticeable craquelure, approx. 2 to 7 cm. Barely noticeable craquelure along the black right edge. A pressure mark and craquelure within the beige field, approx. 3 x 3 cm. The lower blue field with two areas of craquelure, approx. 3 cm each, and with a barely noticeable scratch, approx. 8 cm. A barely noticeable water stain within the black field. Barely noticeable dust and superficial soiling.