.. .that looks like a black dial E159, likely with a cal.478 inside. My white dial looks as thus:
... and that had a 478 in. Late 40s/early 1950s, 'B' mark on the rear denotes chromium base metal plated I believe.
The other that crops up is an E109 - which has the cal.463 sub seconds in it (google will get you a variety of pictures). That one crops up
in what is reputedly a military watch but not issued nor confirmed (see threads passim on MWR for JLC & wehrmacht which should get you
the hits on that).