Unusual vintage door - GIF

Unusual vintage door.

<video controls autoplay loop style="max-width: 100%;">
<source src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17639462446174.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>


Previously:

Bird works door motion detector - GIF
Dinner fork door lock - GIF
Dual opening garage door - GIF
Dual-purpose bathroom door - GIF
Tree slab front door - GIF

looks like a servery door - perhaps the original kitchen was behind it.

I've lived in and visited scores of old homes; this is very unique. I'm no finish carpenter, but if I had correct adjoining rooms (kitchen, pantry or dining) this would be a project. Don't know that I'd be able to make the hardware not visible, would work good looking hardware into finished product.