For your consideration, today we are offering ONE FERRANTI A-871 AUDIO? TRANSFORMER.  An unusual find, this I have no data on this transformer, however I suspect it to be an audio transformer of some sort. Ferranti transformers are not that common. Perhaps someone out there has the proper data on this one! As always , please feel free to ask any questions you may have. We gladly ship worldwide, and pack professionally. Buyer to pay shipping.