Don't baby AT motherboards generally fit in any AT case? They are just smaller versions of full AT motherboard if I understood correctly.
I don't know which country you are from though, but I generally go to recycling centers or there are web sites where I can put that I want to buy old 80s or 90s PCs even if they are not working and I have gotten some good cases that way.

I believe 'Baby AT' cases are actually quite large. The PSU certainly is. What most people call 'Baby AT' is actually LPX.

baby At is 13 long max x 8.5 width, many boards were shorter than this especially P4/5 era boards.

micro atx is 9.6 × 9.6 so a baby AT width is less than that and there are baby at boards that are that short aswell so technically a baby AT could occupy less real estate than a micro atx but generally cases are long enough to accomendate the max length even if a board didn't require it.

This case looks familiar 🤣

I used to own one that looked very similar to that around 2001 with a 430vx or something in it, was just like that except the drives bays were on top, anyways I'm looking for a case like that.

The above one used to be mine. It's my photo 😉

Here are more:

Similar or the same height as the Jerovsek case in the previous post is the 5th one from the right in the bottom row.

Warlord wrote:

I used to own one that looked very similar to that around 2001 with a 430vx or something in it, was just like that except the dr […]
Show full quote

I used to own one that looked very similar to that around 2001 with a 430vx or something in it, was just like that except the drives bays were on top, anyways I'm looking for a case like that.

I have one of these:
My Intel Plato/Premiere II build

Unfortunately, it's in use. 😁

Warlord wrote:

baby At is 13 long max x 8.5 width, many boards were shorter than this especially P4/5 era boards. […]
Show full quote

baby At is 13 long max x 8.5 width, many boards were shorter than this especially P4/5 era boards.

micro atx is 9.6 × 9.6 so a baby AT width is less than that and there are baby at boards that are that short aswell so technically a baby AT could occupy less real estate than a micro atx but generally cases are long enough to accomendate the max length even if a board didn't require it.

That's an awesome little case. Never seen one like that before.

welp 🤣 we know why now that we can't find any of these 😵 becasue of kixs 😠 😐 😒 😢

I had a lot more and sold many... still do 😉