it seems an old superdistortion. But I have a couple of doubts: I have never seen any SD without the little holes on bobbins, and the DCR is exactly the nominal value indicated on the dimarzio site
Measure the polepiece spread. If it's 50mm or 52mm, then it's most probably an OEM of Asian origin.
/Peter
Then I can confirm being a late '70s, early '80s OEM p'up of asian origin.So its most likely 48mm.
Mighty Mite?
Yeah, the 13.68 is spot on, but the missing holes are what leads me to believe its not a SD.