EXCHGE Nikon LU PLAN 50x NA0.80 inf/0 epi WD1mm for good 20x

[pierre]

Dear,

I have an extra lens Nikon LU PLAN FLUOR EPI 50x NA0.8 inf/0 WD1mm and am willing to exchange it for a good 20x with WD > 5mm

The 50x marking are in poor condition, even if still readable so the external 20x aspect is also not a problem.
Only optical performance matters.


I am French, so EU exchange would be better.