The seller says these are Stonehenge II woofers, which they are not. The model II woofer was a stamped frame cheapie.
The model I OTOH used a 416 motor on a 414 essentially, or so I've heard.. He has a pair of these.
Vintage ALTEC LANSING STONEHENGE II SPEAKER woofer working 12" | eBay
Yes they are Stonehenge I woofers 23691.
