Help with a pocket watch - removing movement and some tlc

[Bill2024]

I have this pocket watch which needs a lot of tlc. The crystal is missing, the hour hand is missing and it needs a service. 

The movement is branded Criterion. The case has hallmarks for Sterling silver, Birmingham (uk), 1924. The watch is open face and at the back has a folding dust cover and case back. I have a few questions if anyone is able to help please:

1) How is the movement removed from the case? I can’t see anything that looks like a setting lever screw or push button to release the stem. There are two screws which look like case screws which I took out but it made no difference.

2) I am going to replace the hour hand, or maybe just get a new set but what is the best way to measure for a new set. For example the post the hour hand fits on has a diameter of  1.99mm, so should I get a hand with diameter if 2mm or go slightly smaller. Generally is it best to get the next size down for hands?

3) For the crystal the gap measures 43.9. I’m not sure what kind of crystal would have been installed originally if bough. Would it likely have been a glass one fixed with an adhesive? Or an acrylic one friction fitted? Presumably if it’s a glass one you order exactly the correct size or slightly smaller and for acrylic slightly bigger?

4) I’m hopeful the dial will clean up nicely but what’s the best way to do this? I heard using denture cleaning tabs works with enamel dials but is that right?

Sorry for the long post and grateful for any assistance. Bill

Edited February 1 by Bill2024

[tomh207]

Pocket watches generally are front loaders, many of them the stem is captive in the crown tube. You will need to remove the bezel, some are screw on some click on. There are two case screws there at 7:30 and 2:00 on the photo of the movement, once the bezel is off remove these and carefully drop it out the front.

 

Tom

[nevenbekriev]

This is negative set system, so the stem is part of the case. Pull the crown out in setting position, then press down side (6o'clock) of the movement to get out first.

[Bill2024]

@tomh207 @nevenbekriev - thanks very much. I managed to get the bezel off and the movement out. It turned out to be a pop-off type and I was able to do it using firm upwards pressure with a screwdriver and working my way around the bezel.