The Cincinnati Time Store (1827–1830) was the first in a series of retail stores created by American individualist anarchist Josiah Warren to test his economic labor theory of value. The experimental store operated from May 18, 1827, until May 1830. He sold things at-cost plus a small markup for his time. It is usually considered to be the first time alternative currency labor notes were used, and as such the first experiment in what would later be called mutualism.