Hingstmartin & Theodor Ross, Opus Sch Stahlplatte

Printed record sleeve, 21 x 22 cm, housing a rusty (as issued) quadratic 'record', 20 x 21 cm, manufactured of thick steel, 1 mm, with engraved circle and diagonal lines.

Signed, dated '22.3.1985' and numbered '18/200' in pen by Hingstmartin and Theodor Ross. First edition of 200 copies. A text on the sleeve features directions for use (in German) suggesting the steel plate can be played on any modern lightweight record player. Fine copy.