I would bet that it's a re-branded Konica something-or-other based on two cameras that I own:
A Wards am551 Rangefinder, which is a re-branded Konica Auto S2, which also has a Hexar lens (Konica lenses go by Hexanon).
and
A Konical Auto-Reflex half/full-frame SLR, which went by the name Revue Auto-Reflex in Germany.