I came across a completed buyitnow eBay sale. I have never seen a JD spider cap suspension with hook and eye hardware. Seller is from California - land of the strange................. and if a blue one isn't uncommon enough for you, here is [id=319826687; a brown one ! ]

Smarter people than me add, 'With the hooks these were never ever hung as a suspension string in service. With this type of hardware they would have been used as individual dead end strain insulators.'