Le Monde Edmond
1049
White seconds hands
Firstly a lovely 6542! I too was doing research on the 6542 lately 
It is still one of my goals for this year or next (depending on the fate of finding a nice example).
Yes the white seconds hand. A must on early 6542 watches according to my research (thanks to skeet & ural).
Your post has me dreaming once again. Thank you for that Nicolas! best Edmond