Hahahaahahhaa, guys you make my day!
Of course i will trade that silly odd clumsy golden Ring................NOT!
about your other question, the hanger markings, Horst already gave your answer, he has the same markings on his hanger;
issue office(BA - Beschafungs Ampt) of Fu with the german umlaut , this stands for Issue Office Fuerth
and........Wagriff you can always make me an offer,