Austin Osman Spare 'Sidereal' Postcard

This portrait-format art postcard reproduces Sidereal (1930s) by Austin Osman Spare. Printed on high-quality Invercote G board (350 gsm), the surface offers a crisp image with a subtle sheen.

Produced by The Brown Collection in Marylebone, London, this gallery postcard accompanies the exhibition Hoi Polloi (24 September 2025 – 8 August 2026). Measuring 105 × 149 mm, it has a compact portrait format and refined finish, making it ideal for collecting, framing or sending.

Material: Invercote G, single-sided board, 350 gsm 
Postcard Dimensions: 105 × 149 mm
Artwork: Austin Osman Spare, Sidereal, 1930s, Watercolour and pencil on card, 31.8 × 22.2 cm
Photography: Courtesy The Brown Collection
Exhibition: Hoi Polloi, 24 September 2025 – 8 August 2026, The Brown Collection Graphic Design: Atelier Dyakova
Printed: Roy Killen