Weber "Vintage Series" 12F100 Speaker, 8-ohms.
Maybe has 5-hours on it.
"For crunchy tweed tone with ceramic punch. Replaces early Chicago Jensen C12R.
12", 20oz ceramic magnet, 15 watt, 1" voice coil, straight cone.
Warm, crunchy, early breakup, aggressive, punchy, loud."
Great in vintage...