Vintage Pair Paeco TF4RX09YY Audio Transformers Guaranteed

Description

Up for sale here is this used vintage set of 2 Paeco TF4RX09YY transformers.  These are audio transformers of some sort, and I believe were originally used in Nike radar installations.   I have no more information about these, and do not have any specs, but if you have some idea as to what these can be used for, please let me know.  These are in great shape with light wear and some solder and wire bits on the terminals, and are guaranteed to work.
Please see my pictures for details.
US shipping and handling is , and international is .  If you would like to buy multiple items, just use "add to cart" on everything and then go to your cart and "request total from seller."  I accept Paypal.  If you have any questions, please ask.
I have more transformers and other vintage electronics listed--feel free to take a look!