I’ve Seen 14 Vermeers and You Haven’t

Unless you’re my brother, then you’ve stolen one of my life goals and have seen more Vermeers. But I’ve seen ones that he hasn’t! I’ll have seen 19 by Wednesday. And if I go to London, it might be 23. There are 34 attributed and 2 to 4 disputed paintings (one of which I’ve seen).

(I fixed some numbers, I’m still unsure about the number of disputed ones)