Pick-Up Identification

[BluezPwr]

I recently pulled an SD pick-up from a 1978 LP and am struggling to identify it. The only mark on it reads "DD-3", it's a cream humbucker, no cover and has the SD logo and "Seymour Duncan Pickups" stamped on the base of the pick-up. Any ideas on what it might be and how I can go about identifying it?

I also pulled a Bartolini humbucker out of this guitar which is marked simply with a "50". Anyone out there ever run into one of these?

 

[jeremy]

Re: Pick-Up Identification

do you have a multi meter? if so check the dc resistance and let us know what you find.
dd might be a duncan distortion but im not sure