early 50's speaker from, Peter Jensen's 1st Company:MAGNAVOX!15" Field Coil Speaker Sorry ~ the original owner damaged the cone!Tested in cabinet & on benchIt does work on my benchVC = 8 ohm impedance FC = 5200 ohmsDusty, leaving cleaning to you. Double-Boxed Shipping procedure: 15" Speaker Box with strong Floor, fitted to Spkr, then 15" box placed inside of strong 18" outside box, and proper packing for Safe Arrival to you! Sorry - - ...NO Combined S/H on the 4 speakers, Not safe to ship together customs friendly