Hallo Marek,
this also is typical Cortinarius caninus.
The veil is also typical, ending in a thin ringlike zone. You can see it on your third picture very well:
The veil is ochraceous-brownish, whereas in Cortinarius anomalus (which can be very similar) it is more ochraceous-yellowish.
On the stipe there is a characteristic reaction with Formol in C. caninus: becoming rose-pink after some minutes, whereas C. anomalus is negative. But the anomalus-aggregat is very difficult and there are still many unnamed or very poorly known taxa. So the Formol-reaction might turn out to be not in all cases good, but for typical caninus vs. typical anomalus it works well.
best regards,
Andreas
