Is the hole straight down or does the space below become wider than the opening? Is it wood all the way down? I've never seen this either.
Well, as much as I like Komo's plant pot holder, I don't think wood all around would be a good thing. It has to be a holder for something else.
there would be a liner...so I wood think... but seeing how it's Dansk......how about a pen holder....
Maybe a small ice bucket, like this one? https://www.worthpoint.com/worthopedia/vtg-dansk-denmark-cocobolo-square-416406279
Came across a Jens Quistgaard round serving tray (with divisions) with that same shape in the center. I wonder if this might fit? It's on Pintrest.