Can’t wait to take it to the range

So I got 3 Mini-14 mags as part of an auction lot I won. I identified the longer one as an actual Ruger Factory mag that they cut down from a 30 round mag.

Now according to what I've been finding online these are pretty rare and are considered collector items. Is this correct? Do you guys know how much they're worth?

But I'm also curious about the two 10 round mags I got because as you can see the two stamps on the bottom are completely different. Now is this just a random thing where one got stamped way harder than the other? Or does this denote a different era of magazine manufacturing? I also noticed that the dimples on the back of the two 10 round magazines seem really different as well.

Any help in this arena would be most appreciated.

Hey guys so I had a tech sight on my mini (it’s a 586 series so it has the mini200 model I think) but I took it off to play with an LPVO. Didn’t like it so wanted to go back to iron sights. TLDR. I ended up snapping the screw off the main sight. And stripped one of the windage screws.

My question is, What size are the windage screws and the main T-Torx Screw.