Seller: toober ✉️ (25,859) 100%, Location: West Hurley, New York, US, Ships to: US, Item: 394220231640 Pair Nice UTC O17 Magnetic Shield f/ Old Vintage Ham Radio Tube Audio Amp. Here is a pair of O17 magnetic shields from UTC. And they work! Pair of UTC O-17. I do not guaranty tubes that are sold as-is or untested. Be mindful of trying to combine heavy and delicate things in one order. Condition: Used, Condition: Read the description.