Here's a clearer example. 

Most probably this wall unit:

https://www.vntg.com/54065/golden-sweden-wall-unit-by-royal-board-1950s/

jbrajo. veneer is not a sign of poor quality, a well-selected veneer gives a nicer look than solid wood.

Yes,  thank you!  I thought it was Royal something. Very much appreciate. That piece you link to is gorgeous. I wish that were the one I found. It has some numbers stamped legibly so now I know the company name thanks to you I can start searched better. You’re right about veneer. I also have a tendency to place a higher value on solid wood reflexively, so will reevaluate and check myself. 

Actually this is she. I’m guessing 70s and I can’t figure that the one just sits atop the other. Missing bridge section?  The upper has no way that it could affix to a wall. Can’t find many googles with Royal Board and never anything even close to this.  

@jbrajo.  In my humble opinion that Royal Board mark is the producer of the backboard .

I saw a Reddit post about Royal Board that also had the opinion that they supplied the backboards for other furniture makers, including L.A. Period in the US, and what they thought was a German sideboard.  

Just did some research and learned a bit about the Swedish fiberboard industry (just what I had planned for the day).  It seems pretty clear that Royal Board was strictly a fiberboard maker, based in Skinnskatteberg from 1952 until the mid 80's.   I found no mention of them as a furniture maker in any of the historical info I found.  This history was the best I came across: 

http://backbergslagen.blogspot.com/2019/08/wallboardfabriken-ett-drama-i-tva-akter.html

Thanks for that, mark and lexi.  It did seem odd that it would be marked twice.  The board covers the back in two swaths that meat at the center and there is a stamp on each board. It’s a nice bit of cabinetry at Habitat for Humanity for a steal, I’m not in it for any resale value.   I like to learn about my stuff. 

@mark737. seems you are right, I did some research too and came across some swedish sideboards, especially produced by the company "Breo Oderljunga", and all sideboards/highboards are stamped on the fiberboard back side with "Royal Board".

@mvc  Yes, all examples I've seen are fiberboard and many are stamped in two places, as jbrajo mentions, since the back is made up of separate boards.  It wouldn't make sense for a furniture maker to stamp multiple times like this.  The OP's unit looks to me like a early 70's German Wohnzimmerschrank.  What do you think, mvc ?

@mark737 Yes indeed, a typical 70's German Wohnzimmerschrank, bulk rubbish, absolutely unsalable. (Sorry jbrajo) 😀 

@mvc Ja, genau,  but it sounds like jbrajo has the right attitude around it.  Would be useful in the garage or utility room for storage  

@mark737 ... i'm afraid the garage and utility room will complain to the UN Human Rights Commission ...

@mvc, @mark737 Wohnzimmerschrank or Schrankwand is exactly what this looks like. Although maybe not German production. But  horrible nonetheless. 🙂