( Grandad's Attic #2 )

[mn9000]

Post #2, 1 more coming up

 

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[buck8point]

Old Rotary Telephone Coupler

https://www.ebay.ie/itm/Coupler-GE-...683506?hash=item2ac65e1ef2:g:EG4AAOSwqRlcIry5

 

[Reanm8er]

Judging by the design of the wire fragments left inside I'd say that this is a TV antenna wire splitter. Best wishes--------Phil

 

[Anduril]

Old Rotary Telephone Coupler

https://www.ebay.ie/itm/Coupler-GE-...683506?hash=item2ac65e1ef2:g:EG4AAOSwqRlcIry5

Correct link, but the item is not meant for telephones.
It's an impedance matcher / splitter for connecting an antenna to more than one device at a time.

 

[ToddsPoint]

Yep, you can still see pieces of the 300 ohm twin lead still attached. Gary