NOTE: I now have TWO of these speakers available- will give discount if you buy both. The second looks identical, also 6.6 ohms DC resistance, but was made in 1968.
Tested and working 12" speaker removed from Wurlitzer organ. Made in 1969 by Rola.
Rated 8 ohm impedance and I got approx. 6.6 ohms DC resistance on my meter. Good sound quality. Cone has full range of movement and there is no voice coil rubbing. I also tested this in a Marlboro electric guitar amplifier and it sounded great.
If you look very closely there are a few tiny cracks in the paper accordion style surround but does not have any effect on sound quality or operation. They are too tiny to show up in the photos. Just to be sure they don't cause any future problems I put a couple thin layers of rubber cement all along the surround edges- this should increase flexibility too.
Send your zip code for ship cost- should be between $8.95 and $13.95 if you are in the continental USA (Nov. 2012).