Author unspecified, 20th century, Mosaic composition - Angel

concrete, metal, ceramics, dimensions: 31 x 31 x 3.5 cm.
Poland, Cracow, 2nd half of 20th century.
Winged figure with head - circular shield gilded, against a background of ceramic mosaic in orangish, red and yellow colors.
(According to the bidder, this is a work by Stefan Rostworowski [1921-2000]).
State of preservation: visible cracks and losses, especially on the Angel's wings.