17th-century kneeling chair that converts into an armchair, with an ingenious rotation mechanism

Rare late 17th-century kneeling chair that converts into an armchair, with an ingenious rotation mechanism. In practically intact condition, upholstery covered in elegant red velvet. Fascinating piece in sturdy solid oak wood with a warm original patina. Height cm 82-95 width 58, depth. 60. Restored and consolidated with a conservation criterion according to the rules of ancient art to museum standards:, with shellac finish applied with a buffer on the original patina. with a pleasant non-glossy or semi-glossy effect, suitable for antique furniture.