Goetz: K-5 Von Stein Death Medal

K-5 Von Stein, Archbishop of Munich, 1909, Cast bronze, 50.10mm, 55.3g. Gussfrisch

This medal was created to commemorate the death of the Archbishop.

Obverse: Von Stein bust 3/4 right within a wreathed border. Inscription along the inside edge of the wreath reads: Dr FRANZ-JOS-v.STEIN-ERZBISCHOF v.MÜNCHEN

Reverse: Wreathed border with the inscription; ZUM-GEDÄCHTNIS SEINES TODESTAGES (In commemoration of his day of death, in left field 4./MAI/1909) Madonna stands behind putto which is holding the archbishop's hat in his right hand and the pastoral staff in his left. Two shields in foreground, left, with mountain and two stars; right, with crowned bust, left.

Does anyone understand the significance of the symbols on the shields? Goetz uses the same elements on his K-4 medal varieties which all pertain to von Stein too...could these be elements of a family crest?