Wilcox Docter Acog Mount

Anyone have any info on this Wilcox Acog Docter mount? Bought it on eBay, Never seen one before.

I know Jpoints were mainly what NSW had piggybacked on their acogs. But I think I’ve seen a few pictures of Docters as well.

Any pics of Docters on Acogs or info on this Mount would be helpful.