• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Transformer Identification

Your quite probably looking at two SE output transformers, a B+ transformer W/ heater voltages, and perhaps a big Ol' choke for the PS.
The sleek casing is cosmetic so as not to be "industrial" looking. Often they are sold both bare & ugly or "Potted" as they call it......with this casing.
Many manufacturers use the same stamping to enclose their product.....it looks like the label up top has been removed for some reason.....check to see if there is some, any ID from beneath.