Here is a large dry process wall bushing. I have placed it next to a CD 128 for size comparison.

Very unusual, no markings of any kind that I can see. Very heavy., probably 7-8 pounds.

Picture of top [id=57415446] Picture of bottom [id=57415480]

$12.50 plus actual shipping. I accept check, cash, MO, NON CREDIT CARD PayPal.