I like to find good stamps in my stamp mixtures. Not annoying automated labels that seems to be more and more frequent nowadays. They don’t belong in good stamp mixtures. What I don’t mind finding are paper ephemera and some of the less common labels such as these (got them in a lot I bought recently):
2 colorful vintage matchbox labels, one tuberculosis stamp from the Pakistan National Tuberculosis Association, an interesting Portugal machine label depicting firefighters and finally a couple of S.A.G. stamps (Saint Anthony guild).
Better than finding rocks (yes I have that once in a kiloware…)
What do you like to find in stamp mixtures (besides good stamps)?