Christian Hvidt?
While perusing the danish furniture index I noticed a shelving system designed by Christian Hvidt for Søborg Mobler. Perhaps this is related? It has the vertical shelves.
Vertical shelves
would be called dividers . . . intended for LP records among other things . . .
Half-blind dovetails would be more work if they were hand cut -- but easier than through-dovetails when machine-made.
