You are bidding on a pair of Western Electric type 174B Output transformers.  These are nice clean transformers that I removed from two identical pieces of Western Electric audio equipment.  Both are good transformers, and are rated at 37.5:4500 ohms.  The high side winding is rated at 3.2 Hy with a DC resistance of 59 ohms.  The low side is 3.9 ohms.  The frequency response is 100 to 6000 cps.  These do not have a date code, but both were made in mid-1940's based on the date codes of other components.  Both have nice long leads.  They measure roughly 1 ¾ inches square in cross section, and is 3 ¼ inches tall.  These are quality transformers that should be great for tube audio, and create supurb sound with Western Electric quality.  Shipping weight is 3 pounds.  Please see my other auctions for more interesting tubes and radio and audio items.