set of 4 armchairs in leather model Amanta by Mario Bellini for B&B Italia 1970

Beautiful and rare set of 4 armchairs all in leather (2 black with white shell, 1 black with black shell, 1 brown with black shell) by mario bellini for b&b italia 1970 in good general condition, to note some small scratches and missing a button on one of the cushions of the brown armchair, possibility of hanging them all together to form a sofa thanks to the tabs provided for this purpose on the feet of the armchairs.