Altec 15335A Octal Bridging Transformer Rare

This listing is for 1 single (I will make a deal for all 3 but as for now the listing is for ONE ONLY) 15335A Bridging Transformer plug-in type line bridging transformer. These are used in a variety of vintage green faced Altec Lansing units, including but not limited to preamplifiers, mixers, compressors and eq.