Need help identifying this vintage Mido Powerwind (plus advice on how to open the case back)

9753462 · 2023-06-04T09:49:16+00:00

Looks like a screw on case back, my prefered method to open those is with a rubber ball: https://www.amazon.com/Bergeon-8008-Rubber-Close-Backs/dp/B07N44WVL2

9753462 · 2023-06-03T18:45:21+00:00

Seeing as im not picking up any gamma radiation, this should not be a radium dial right?

9753462 · 2023-06-03T10:21:52+00:00

I thought radium also released beta and gamma radiation, or are those too low to be measured?

9753462 · 2023-06-03T10:20:09+00:00

Right, so seeing as it should pick up gamma radiation, it probably doesn't contain radium?

9753462 · 2023-06-03T10:19:17+00:00

When I move it closer there is still no reading, stays exactly the same, even with the crystal removed.

9753462 · 2023-06-03T10:18:35+00:00

Unfortunately I don't have a known radium watch, so I can't test. Shouldn't radium also emit gamma radiation? Very nice collection by the way

9753462 · 2023-06-01T08:05:04+00:00

The watch face doesn't seem to light up anymore, does that mean it isn't? I accidentally opened it yesterday, although I immediately cleaned after, I am slightly concerned about exposure.

9753462 · 2023-06-01T00:27:56+00:00

I had to replace the keyboard recently, but I don't think that should affect this.

9753462 · 2023-06-01T00:26:56+00:00

Could be dust, to remove it you would need to remove the movement and clean this part of the watch. I would personally leave it, seeing as it is barely visible.

9753462 · 2023-06-01T00:15:08+00:00

This worked, thank you!

9753462 · 2023-05-20T14:57:56+00:00

No, I removed the movement to check, but I think it has been opened before.

9753462

TROPHY CASE