We have 4 Plug Replacement Electrical nos Vintage Salvage  "Jiffy Push-Pull Plug"  They are on their original advertisement cardboard with Instructions.  They are by "Eagle" and have patent dates dating them to the 1950's.  Each one measures about 4" x 3" on the cardboard with the plug itself measuring about 1 3/4" at it's longest x 1 5/8" in L x about 3/8" in D.  They are new old stock.  I do have a few of these lots available upon initial listing.

4 Plug Replacement NOS Electrical Salvage Vintage