amanico[JLC Moderator]
402140
Well, the first Milgauss probably was the 6543, issued in 1954.
The difference? The straight second hand, while the 6541 had a lightning second hand.
Here is a 6543. Credit picture: Squarespace.

A superb 6541 I saw in Paris:

Patrice's 1019 in Italy:

A black 1019 seen in Paris:

1019 Black Swan. Credit picture: Phillips:

Our friend Tyler's 1019:

And mine, the 116400GV.
As you can guess, I am a huge fan of the Milgauss!
Best,
Nicolas