Pair of chairs Thonet "heart" and Kohn No.18

Pair of viennese bistro chairs at the end of the 19th century (1890-1900 ca) in format for public places, not space. One is a thonet no.28 well known for its cordiform back and seat ("hertzform" - heart-shaped); the other is a no.18 stamped j-j kohn. --- good seniority, solid structures, usable on a daily basis, original cannages. --- no.28 thonet: height 84 cm, seating 38x35 cm, seating height 46.5 cm / no.18 1/2 kohn: height 85 cm, seat 37 cm, seating height 46 cm.