Blazon: Per pale gules and azure two wings displayed argent, surmounted by three roundels in pile of the first, second, and third
The wings (and possibly also the division per pale) are derived from the arms of Michaelbeuren Abbey, though I’m not quite clear on whether those are the arms of the abbey itself, or the abbot Ulrich Hofbauer. (The positioning here suggests the abbey, though; I’d guess the sinister coat is the abbot’s personal arms. Traditionally, in ecclesiastical heraldry, the arms of one’s office take precedence over any personal arms.) The three roundels are a symbol of St. Nicholas, the town’s patron saint, albeit with a tincture swap; they are more usually depicted as bezants, the better to recall the story of the anonymous gift of three dowries.
Blazon: Azure a castle triple-towered or windowed gules between in base the letters C and D argent and in fess two wings, pinions to the exterior of the second, in chief between two molets of eight points in bend and as many like molets in bend sinister a lozenge of the last charged with four palets of the third surmounted by two keys in saltire of the fourth; all within a bordure of the third charged with eight like molets
Blazon: Per fess gules a fess argent (Austria) and azure a dexter wing of the second, impaling or a double-headed eagle sable, armed of the field, langued gules, and charged on the breast with an arrowhead, point in base of the second