Mstrauss.
It appears the seller I bought all of mine from has none left atm.
However this is the idea but without all the screws etc.
https://www.ebay.com/itm/153644817781
There are still plenty of ceramic insulator on eBay, vintage telegraph or telegram units is a good place to start for cable risers like this for example.
https://www.ebay.com/itm/153832196243
It appears the seller I bought all of mine from has none left atm.
However this is the idea but without all the screws etc.
https://www.ebay.com/itm/153644817781
There are still plenty of ceramic insulator on eBay, vintage telegraph or telegram units is a good place to start for cable risers like this for example.
https://www.ebay.com/itm/153832196243