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Miyota 6L76 ?

So, inspired by Marks excellent videos I decided to try filming a service, by crikey, it's extremely tricky, working around a camera and trying to keep things in shot. This is part 1 of a Seiko 7019A strip, a Seiko 5 (Franken) I bought at a flea market in Hamburg and should have had a 7S26 movement. I could have swapped the movement for one of the 7S26's I have but where's the fun in that, besides which, it wouldn't have been the same watch I bought as a holiday keepsake. Apologies for the first 4 minutes of footage which youtube seems to have butchered making it look 480p, it does go back to acceptable after that, I had tried to use my mobile phone which films in 4K so I could have a bit of working distance and then crop in to still have 1080p. If it doesn't rectify itself I shall have to remove and reupload the video as the original rendered video plays ok.

I've only once come across a partially seized dial foot screw and that was badly corroded due to water ingress at some point. Can you see the dial feet protruding through from the back of the movement to confirm they definitely are? They do look like they should be and if so the only other thing i could possibly think is that someone has used industrial stud lock rather than a weak threadlock, (neither of which should go near a watch internals). If you're certain they are, and if you have a thin tipped soldering iron, try applying the tip to the screw head to transfer heat to see if you can break the bond on the screw threads, be very careful though.

I seriously doubt that to be wear. I looks too deliberate.Plus a person with a watch regularly serviced would not have allowed it to wear so much .It was altered for some purpose and then "repaired".Attend to the movement first, you have some rust issues.then look into that case.

previous owner may have glued the dial down.most likely culprit crazy glue.Try a bit of acetone or nail polish remover on screw heads.Don't become impatient.

Here are two photos of the movement. I have marked where the dial feet fit in. The dial is held in place by dial screws and there is nothing out of the ordinary. They should be like number 23 and screw in the side of the movement.

Try a smaller screwdriver. In 20 years I've yet to encounter a frozen dial screw.

You'd think no1 is the guy (well, I would too), but in case nobody's noticed watches are weird. Sometimes the most set-a** looking springs trounce a new Nivaflex with all its backcurve fancypantsness. I'd go for no1 but bet the others are darn close in performance if same thickness.

My money is on #1 too.

It looks like they are already undone. I presume you have tried to lift the dial. The only other thought is they are cross threaded.

As long as there aren't any kinks, I would guess spring #1.

Have a google for mobeius oil chart it gives all the lubricants and their uses.