Splendid Peonies - Most Stamps in One Series
According to the Guinness World Records website, "The stamps in the series entitled Splendid Peonies were released officially from 2006 to 2010. The stamps were released for the annual peony festivals held in Luoyang, which is famous for its peony in the world. Starting from 2006, 200 different stamps were released consecutively each year. The stamps feature the beautiful peonies, with 1000 varieties."
Shown above, a miniature sheet from the series.
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