Anyone know what pickups were stock in the ‘81 ES-100s? I just swapped the bridge magnet for a UOA5. Black bobbins, silver baseplate, I think steel baseplate screws and white hookup wire. No sticker or unique identifying marks. Just a plain silver baseplate. Whatever they are, they sound amazing. Mine is a ES-100J and the original magnets feel and sound like A2. I own Throbaks and OX4 and have owned ReWinds, Wizz, Shed, Fralin, etc...these pickups are total keepers!