Seems like the farther you get from Norristown out in eastern PA. where these were made the tougher they are to find. The F stamped on signals and cables are tough but aren't nearly as hard to find as the oval markings. This tough oval F P CO marked cable is damage free. You'll love the reddish brown glazing ! $20.00 + shipping. First email that says' "I'll take it.". No PayPal. Email with questions.