Many thanks to all, for looking and kind comments.
I should precise a few points about the tones : this is not a toned print.
The paper/developer combo I use (Adox/Variospeed W) gives me prints with very warm tones, almost sepia, and I would for the first time use a color scan for the print, rather simple grey levels. I tried to be the most faithful to the prints tone, and on my desktop screen, it was looking right.
I discovered that the results, displayed on my laptop screen, has a slight strange "greenish" cast that I didn't expected, so I will probably have to redux my scan.