ESS Woofer 10" 680-0007 Heil AMT 4

Description

Woofer will need refoaming but works good otherwise. It outputs sound (tested in horizontal position with very low power) and there is no voice coil rub. Spider is in good shape and is fully attached. Cone has some marks and dirt on it, but being a textured paper cone I didn't want to risk damaging it by trying to clean it. There is some corrosion/white material on the magnet housing, but it doesn't seem to affect performance.
Impedance measures at 3.8 ohm. Part number is 680-0007. This came out of an ESS Heil AMT 4 cabinet, and appears to be the original woofer. Unfortunately the woofer in the other cabinet was not an ESS woofer so I only have one.
Stamp on the back reads:
680-0007
10Z2469
91 7410 D
The last line is difficult to read so I'm not 100% sure on that text.
Measurements (to nearest 1/16")
Overall width: 10-5/16"
Mounting lip: 1/2"
Basket diameter: 9-5/16"
Height: 4-3/4"
Cone diameter: 7-5/8"
Mounting hole center-to-center distance: 9-7/8"
Message me if you need any other measurements or a clarification on any listed above!
ESS Woofer 10" 680-0007 Heil AMT 4. Condition is "For parts or not working". Shipped with USPS First Class.