Brand new, never used large RCA output transformer. Has the hallmarks of a UTC transformer but no UTC labels so Im not sure who actually made it. Was purchased in late 1963 - label also says "Bell Radio" and has some other stuff penciled in (dates and notes). Not sure what this is actually for, my research is not leading to a specific model that this is for or a replacement for. New in box, just opened to snap pics and research. Never soldered to. Terminal strip on bottom is a bit loose but will not affect performance. All taps Ohm out as expected, guaranteed working.