I have a set of Fender pup's that have "016730" stamped on the bobbins. They also have raised pole pieces. The odd thing about these pup's is that the common (i guess) wire for each one is black instead of white. The neck pup also has a blue wire, the middle a red, and the bridge a yellow wire. I've seen other Fender pickups with the blue, red, and yellow wires before, but they always had white wires for the "common". Can anyone give me an idea what type of pickups these are? Are they American Standard, Tex-Mex, MIJ, or what? I am not sure what the resistance readings are for each one, but i can check if I need to.

The black wires are the ground wires, the other coloured wires are the hot that go to the switch.