I have a pfennig I'm unsure of. It's got an old tag with "Friedrich III (1440-1493). Schwarzpf."
I have been looking for a match and a ref, but no luck. Any help would be appreciated.
My write-up for now is: AUSTRIA. Friedrich III. Schwarzpfennig. 1440-1493 AD. Obv: Eagle. Rev: Blank. 0.49 g. 14 mm.