Antique paperweights were made in the "classic" years between 1845 and 1860 primarily[5] in three French factories named Baccarat, St. Louis,[6] and Clichy. They made between 15,000 to 25,000 weights in the classic period.[7] Weights (mainly of lesser quality) were also made in the United States, United Kingdom, and elsewhere, though Bacchus (UK) and New England Glass Company (US) produced some that equaled the best of the French. Modern weights have been made from about 1950 to the present.