???

[Jennifer]

[akroorka]

Nice images here and I like the holder as well—an old electrical insulator from an older house?
Imho—this is an Akro Agate patch type that was found as a discard during the “Digs” of the old Akro site---I far as I know no –one ever had permission to dig these sites. 
Akro Agate had one thing going for them though-—quality control.

I apprecaite all opinions and hope to see some more here.

The inclusion of the "oven brick" etc tells me this.
Nice find!
Marble—On!!