This marked Thonet G80 deck chair is likely the forerunner of the Thonet Siesta Medizinal chair, designed by Hans Luckhardt in the 1930s. its in good and stable condition. Height 100 cm (in upright position) / 76 cm (stretched), width 66 cm, depth 100 cm (in upright position) / 157 cm (stretched), seat height 38 cm (in upright position) / 35 cm (stretched). This piece has an attribution mark, I am sure that it is completely authentic and take full responsibility for any authenticity issues arising from misattribution