jaychang777
221
Couple more UN’s that I have been enjoying
Jun 24, 2020,03:26 AM
Both are 35mm, very wearable for sure.
Comments:
view entire thread
Thanks!
By: jaychang777 : June 24th, 2020-03:34
both are also waterproof as well, I wish UN made more pieces like this now too, such a clean look.
Radium half life
By: chippyfly : June 24th, 2020-04:58
Thanks for sharing your vintage U-N’s but please be careful about regular wearing. I share my 1958 U-N here, which radiates at about 0.9 µSv/hr and mine's original dial has no “parking marks” and is safe to wear a few days at a time, which I do. I have a ...
;) [nt]
By: amanico : June 24th, 2020-08:28
That rare radium G-P Gyromatic was bought from the estate . . .
By: chippyfly : June 25th, 2020-03:19
. . . of a long time collector who owned over 2,000 watches when he died a few years ago. It likely was acquired a long time before? Worn 14 hours per day x 365 x 15µSv/hr=76,650 µSv per annum; a very large accumulated dose of radiation. "100,000 μSv – Lo...