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I have three. Where are you located?

Today i needed to make one dial feet holding screw for the Roskopf to try on the new domed glass a grinded. Started from a 3mm nail. M1.2 thread since the previous screw (M0.9) was broken and had to push out. Roughly shaped upper part. Nut cutting with my new "special file" an old broken pocket knife. The new one on the right. And finally i could put it all together after a bit dial feet adjustment.

On some Tissot movements the dial feet are just a friction fit into the main plate, without screws or clips. It may be worth trying (very gently) to pry the dial up from the mainplate to see if it will lift.

Ordered some laboratory hourglasses. They are 1.7-1.8mm thick. Just finished the domed glass for the Roskopf from one of them. The final diameter is 40.05mm. First, 45-46 mm middle was cut. Here is the finished crystal, the old plastic one, the front bezel and the tools i used. Desired diameter was reached with the diamond disc. 1000 Grit sandpaper, 3000 grit and finally 10000 grit diamond paste was used on the edge. Perfect heat-fitting. No fancy cement or glue However, i added some diluted UV glue on the edges after fitting to make sure it wont fall off. It will cure tomorrow on the sun Now i am waiting for the thin flat glass for the back bezel.

Strange, I can't see the 6309 turtle shape in your watch However sometime 6309 case were skilfully skimmed and reshaped, especially in the Far East. Or it's a 6309-729A with a swapped caseback.

Heatmolded some dvd-cover pieces which are 1mm thick polystyrene. One of four seems acceptable. At this stage I turned my attention to glass since railroad watches were usually equipped with glass crystal. Heatglued a piece of 2mm glass on my special "lathe". The circe was cut with a tungsten carbide bit and the edge shaped with diamond powdered dremel disk and co**BLEEP** honing stone. After fine shaping with 2000 grit sandpaper the glass was fitted on a special crystal fitting tool (heating the bezel over a candle and copper plate). Perfect And suddenly .... I couldt close the lid 2mm glass is to thick.

Made the mold for the crystals from plaster. Hope it will work. Now i need 1mm thick PMMA or polycarbonate. You are right, i need PMMA : https://www.fasttech.com/forums/vapers/t/1413346/pmma-acrylic-vs-pc-polycarbonate/1 I have access to a heating oven. 160 Celsius is needed to make the PMMA soft. These high diameter crystals were fitted while heating up the bezel ring. The book says it is just dropped in, no press needed, just a heating plate.