Over the sinister (armsbearer's still left, viewer's proper) side is definitely the Wheel of Mainz, borrowed from the arms borne through the Archbishops of Mainz. This recalls the time when Electoral Mainz succeeded the Lords of Eppstein in all constituent communities in 1425. Mainz's overlordship lasted in most constituent communities https://felixzekqu.win-blog.com/1552486/sandals-small-heel-an-overview