ᐅ Renovation, Identifying Tile Type, Circa 1960, Is It Hazardous?

Hello everyone,

We are currently renovating our basement apartment. We are installing new parquet flooring over the old tiled floor. However, we want to remove the baseboards, which are also made of tile. The tiles themselves seem questionable to me in terms of condition. They easily crumble and look unusual. I have already sent samples to a lab for asbestos testing, so asbestos can be ruled out. Does anyone recognize this type of tile? Do you think it is safe to remove these tiles?

Here are two pictures of the tile:

Thank you very much for your help!

These are very strange photos if both are supposed to show the same tile: Image 2 looks brownish, smooth, and more like porcelain stoneware; Image 1, on the other hand, shows a break that is black and doesn’t look like a tile at all, but rather like a slate slab.

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I can’t make sense of your photos: In the second one, I see a square reddish-brown glazed tile, but in the first one, I see wood and slate. How does that fit with your description?

The first and second pictures show the same tile. In the first photo, it is broken and placed on a wooden surface because the lighting was better there...
The behavior actually resembles that of a painted slate tile. But I only know slate as a more expensive material. Why would someone use it to produce tiles if the surface is not meant to look like slate in the end? I was just concerned that it might contain some hazardous material since I had never seen such a tile before.