I'm intrigued by this, my guitarist recently recieved a gutar from his uncle (recently passed away, one of our songs is dedicated to him) the pickups were actually microhones in pickup casing with exposed phone cover. the pup selectors wer just switche that said mic 1, mic 2, mic 3, and the volume and tone were nobs oerpendicular to the strings, the all controls were located near the upper part of the bodu above the e-string. no serial # and no brand, gigantic headstick that is slightly fender-ish. it's supposedly from either the 60's or 70's. please help me if you know these pickups brand.