It looks like the gray cable on the right has Tuchel on mic end, then probably someone put a 5pin XLR on the other end to make it a bit more modern. Then you have the 5pin to duel XLR's on the left. If the mic does in fact run off Phantom power, you are ready to go.
One thing to consider, if there is any reason to suspect a sleeze bag seller, is that anyone can solder connectors onto a cable to make it LOOK good...