I'm not sure about the steels. It would not suprise me.
In the 50's and 60's CMI (Chicago Musical Instruments) owned both the Gibson and Harmory guitar companys. Gibson made a version of the Mini Humbucker (like they used in Epiphones) with some unusual mounting rings and also had the pole pieces arranged like Fender humbuckers (three up three down instead of in a straight line). It would not suprise me at all if they made pickups for their steels also.[This message was edited by Ed Miller Jr on 06 June 2003 at 06:02 PM.]