Set of 2 black Erton armchairs

Set of 2 armchairs from the 1960s, in very good condition (see photos). Very heavy, sturdy, they are made of high-quality leatherette, circa Erton design, but we just find an aluminum medallion marked "23" (for model 23?) on the bottom of one armchair. The seat is still very good. Just the gold metal legs have lost their gilding a little. Vintage but ultra trendy. Contact me for shipping. Dimensions: height 42/88, width 74, depth 84 cm. (weight approximately 35 kg each).