Years ago my brother-in-law bought a pallet of equipment. In it was some (7-8) Tektronix transformers. In our spring cleaning, we found the units. I do not know what they are for, maybe some scopes (the pallet of equipment came from the military). P/N is Tektronix 120-0203-00 and another number P/O 050-0039-00. The transformers have 12 solder terminals and the date codes show they were made in 1979. Units are 4- 1/8 inches long, 3.5 inches deep and about 3.5 inches tall. If anybody wants them they are welcomed to them for the cost of postage. They weigh 5 pounds each. Brian - KD4FM