- Mid-century Adjustable Industrial Workshop Chair by Kovona, 1980s,, Czechoslovakia, - made of faux leather, metal and chrome - seat height of armchairs is 48cm, seat height is adjustable on to 68cm,, - shows signs of wear and age (scratches, etc.), - in good original condition. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution