Ferro-Magnetics TW 40 72220001 Transformer Ferro-Mag

This item was purchased from an aviation surplus sale. I do not know the history of it. It is in good cosmetic condition. It is not tagged as to the condition status or aircraft type. I have not been able to find any specifications on this model. I am not able to test it. It only comes with what is shown in the pictures. I have more than one of these and so the one you receive may not exactly match the pictures, but it will be in the same condition.

S509-50 d