A counterproof can also be obtained from a drawing or from and old print but the results will be less satisfactory. Such counterproofs can only be taken from certain types of drawings and prints. Graphite crayon, drawing charcoal, carbon, pastel, colour crayon, and chalk can be used to make a counterproof. The sheet of paper which is to receive the counterproof must, however, be damp for it to work. Counterproofs are usually only made for the specific reasons mentioned above.
Some collectors look for counterproofs because of their rarity as well as for their curiosity value.
It is true, however, that at times they are endowed with a particular charm.