The picture doesn't quite seem clear enough to identify the blotters, the blotter art looks really black. Are they completely black tabs ? On your holiday if you can try and acquire a lsd reagent tester as there is a chance you could have possibly been stooged by the person you got them from the old "they aren't from around here" "they won't be back" type approach, i'm not suggesting you have adulterated blotters but maybe first you should test for the presence of LSD.