Info on these vintage watches?

Hello! 
I have these four, mostly anonymous vintage pieces that I would love to know more about. The Tissot is the one I know the most about, however the other three seems to be cheap brands from the past. Except for Milus, some of which I’ve seen other models of. 

 

Tissot T.12 Visodate Automatic.
This watch is, as mentioned in my first post, an heirloom from my great grandfather, which my father and I recently found going through some old storage lot. It was dinged up and really hard to see through the crystal. I polished the crystal up, but not the case, to keep that old, beautiful look. When we found it, it was also running, but poorly. The automatic works did not work due to a reversing wheel being broken. I used the watch for months while I was looking for a replacement wheel. After approx. 5-6 months of looking, I found one left on eBay from Spain. I quickly ordered it and it arrived only 6 days later! Now the watch is working fully and it’s my favourite piece.

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The Milus is gold plated, and has some awesome patina on it. No info on the back, and upon opening the case back I find what looks like an off-the-shelf movement without any branding.

 The watch looks to be keeping time relatively O.K., I haven’t gotten the time to give it sufficient wrist time, yet. 
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Antima Sport Junior.
I think it’s actually a childrens watch (34mm?) being at bit small even for me and my skinny wrists. This one too is completely unknown to the internet, as far as I can see. It seems to have a cheap movement (will add a photo later). It keeps time, but very poorly. I am talking +-10-20 minutes a day, maybe even more. Due to this and it's size, it is not getting the wrist time it should. It is really beautiful to look at though, with the patinaed dial. Reminds me of an old Longines.

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Efrico Shockproof Nivaflex. 
This one is also gold plated, and super thin! The crown tube is missing, so it’s not as "waterproof" as it states on the case back. This one will not keep time, and it seems something is catching in the mechanism, but I’ve looked through, disassembled and rebuild it but it still happens.. I haven’t cleaned the movement like I should, but it just seems odd. The amplitude sounds O.K., compared to others. I wind the watch up together with the other vintages, come back hours later and either it has moved and shows the correct time, or it hasn’t moved. I won’t give up, though. 

 

I hope someone has seen / heard / knows something about any of these watches, please let me know!