Vintage black leather swivel office chair, 1960-1970

A vintage swivel office chair with black leather upholstery. The chair has a swivel chrome base and can be adjusted in height. There is a logo underneath but I do not know the brand unfortunately. The leather upholstery appears to be original and has some scuffs and tears on the seat pad. The leather has been cleaned and polished so could be used as it is or re upholstered which would look impressive. 1960-70’s ca Dimensions Back height 76cm Width 58cm Depth 52cm Seat height 44-48cm Seat width 44cm Seat depth 42cm Arm height 65cm