pretty hard to tell from the pic, other side of caliper and close up on the lever would be helpful but...
lever looks like a Hayes 'Mag' which is basically the original hayes disc brake lever, caliper also looks similar but never seen one in that colour (painted?) and hard to tell without seeing closer and other side.
Other possibility is an early hayes 9, but I dont think so the lever body looks closer to the squarer Mag lever, 9 is more curvy...
rotor is old school hayes too, but obviously rotors can be swapped changed so might not actually go with that caliper