Some Blancpain Vintage No Rad Bund.
I thought is was interesting to see differentBund, with different engravings on the back.
The first one, which I happened to own:
Our friend Richard's one:
And another one from another friend:
Then, the second generation much bigger and thicker, with the Tritium symbol " 3 H " :
Fascinating, these watches, don't you think?