vintage 80s patent oil slick leather clutch/shoulder bag

vintage 80s Arnold Churgin roomy black patent oil slick genuine leather large clutch with detachable snap on strap to convert to shoulder bag fold over flap, 2 large compartments, interior zipper pocket 'velvet' interior lining rarely used, no signs of wear, EUC the oil slick coating is most noticeable on the interior patented parts exterior has a mild plasticy tacky feel, believe its from age related deterioration of the oil slick effect Arnold Churgin bags were all handmade leather, usually made in Italy. approx 28 cm long x 16 tall