Abstract
This study was concerned with the picking up of small coins as an unobtrusive measure of their perceived worth. Five sets of the four least valuable British coins were placed (“lost”) in a country town. Five pairs of observers noted the approximate age and sex of those 100 passersby who, having seen the coin, either did or did not pick it up. The results showed that the probability of a person picking up and keeping a “lost” coin increased linearly with its worth.