That cord is a unique WE number. In all WE cords, the number in the middle indicates the number of conductors. The plugs and connectors, however, (I believe) are COTS (commercial, off the shelf) items, and you could make your own cord, if you are successful in finding the proper plug/connector.
I will contact a friend who does not post here, and ask him. I'm sure he knows the manufacturer and type.
He is DA right know. Try looking at Molex® products. I believe they are the maker.
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