On the basis of a patent issued by Joseph I on June 24, 1782, a local post ("malá po–ta," literally "small post") was established in Prague by Franz Garsie and Karl Simitsch. The service, commonly know as the Clapper Post because of the clappers carried by the postmen, was activated on July 27, 1782, was to service not only the center of town, but localities up to 13 miles from the city limits. Mail was to be delivered five times a day during the summer and four time during the winter (!) and operated from Celetna 12 in the Old Town. Such letters were marked with this now extremely rare "P" cancel. Twelve years later, this Post was combined with the main Prague post, though it kept quasi-independent status and disappeared entirely only in 1821.