It's a 350T or a 700T that was offered....I have 1 of 4 or 5 of the 350T's that were made.
gibson es-335 All Chuck's legendary recordings were made using a Gibson ES-350T with P90 single coil pickups. When he became popular again in the mid 60s he switched to variations of the Gibson ES-335 which he continues to use to this day. He started out with a Kay but before he made his Chess recordings with the 350T he used several other Gibsons. Photos of him playing live in 1953 show him using a Les Paul and a Gibson ES-295.