Funny, I just saw that one on Selency too and was about to come back here and post it but you beat me to it.  So, it's clear  Olholm and AG had a relationship.  What do you all think about the Vodder attribution on that secretary?  The drawer fronts are somewhat similar to some of his other designs, like this Sibast chest.  

A couple more pieces with Olholm stamps and AG mirrors.  

I was wrong, the company Aarhus Glarmesteri could not confirm my guess, the sticker "AG" does not belong to them, but to whom, they don't know either.

Aarhus Glasimport & Glassliberi maybe?

Their logo is different but the initials would match...

If you take a look at this marked Ølholm piece you will see a completely different workshop signature. Take a look at the drawer side most specifically. Stopped dado, solid secondary wood drawer front. Ølholm is not responsible for the OP’s piece. 

@leif-ericson. Folowing your earlier post, it is apparent that the vanity I posted is  low end construction. albeit with a quality mirror !

So..

It is not designed by Arne Vodder,which I was always sceptical about anyway.

And it has nothing to do with Olholm møbelfabrik And yes, their pieces are of a higher quality construction. .  Thank you for your insight.

All the more recent posts have gone in another direction ; ie:- trying to identify the manufacturer of the mirror, which is where the Olholm connection resurfaced; a bit of a diversion, but interesting nonetheless .

This likely doesn't help ID the original vanity but I saw this one with an Amager Bolighus label.  It appears to be identical to Olholm marked pieces.  Were they a maker or just a retailer?

I saw that one too.And ,of course, I googled!! I think "bolighus" translates as residential building and Amager (brogade)is an area within Copenhagen. Most likely a retailer like Illums Bolighus.

Illums Bolighus was a manufacturer, but Amager ...?

Edit: Lexi was too fast 😀 

I was again wrong, Illums Bolighus is - as lexi said - a retailer and not a manufacturer. (Good morning, Danish Design Museum!)

@mvc Many things are more complicated than they look.  The terms retailer, factory, cabinetmaker, etc etc don't necessarily have the same meaning we think they do.  Amager Bolighus would be the name of a retailer, or at least that is what a potential customer would have understood at the time from such a name, so that is the important part.  However, bear in mind that many entities we consider "manufacturers" were not.  For example, Bovirke was a retailer with one store in Copenhagen, not a manufacturer.  And then it became part retailer as Bovirke, and part "producer" as Bo-Ex, financing the outside manufacturing of its exclusively commissioned designs.  Illums Bolighus was also a lot like this.  IB retailed all sorts of things, but it also had a few designs that were made for it exclusively, and presumably it was acting there as the financier.  And lots and lots of factories outsourced important parts of their furniture, for example, plywood shells, complicated turning, steam bending, metal fabrication, etc, etc.  Carl Hansen and the wishbone is a good example.  The rear legs and crest rail were outsourced (complex turning and steam bending respectively).  So to some degree you could regard Carl Hansen as part financier and part maker.  

@leif-ericson You are right, thanks for the interesting info.

saw this one at lauritz with no markings and drawers resemble leifs olholm pictures

https://www.lauritz.com/en/auction/sminkebord-kommode-af-teak/i5631603/

maarten

@wesemael. I saw that particular model too during my own searches. Thanks for posting.

A new theory: AG means argentum, the chemical name for silver, which means that the label is only a material description. High quality mirrors are coated with silver, and - theory! - protected with copper, "kobberbeskyttet". According to this theory, the label would not be a manufacturer's name, but nothing else than an information about the used material, a quality seal, that the mirror producer guarantees for a high end product.

@wesemael  The one you linked does have a tag on the back.  Not sure if it's by the retailer, an auction house, or maybe a moving company, but here's a cropped shot of it.