island of Japan, however, the Honshu figures cannot be placed one inside another. Sources differ in descriptions of the doll, describing it as either a round, hollow daruma doll, portraying a bald old Buddhist monk, or a Seven Lucky Gods nesting doll. Savva Mamontov's wife presented the dolls at the Exposition Universelle in Paris in 1900, where the toy earned a bronze medal. Soon after, matryoshka dolls were being made in several places in Russia and shipped around the world. Manufacture Ordinarily, matryoshka dolls are crafted from linden wood. There is a popular misconception that they are carved from one piece of wood. Rather, they are produced using: a lathe equipped with a balance bar; four heavy long distinct types of chisels (hook, knife, pipe, and spoon); and a "set of handmade wooden calipers particular to a size of the doll". The tools are hand forged by a village blacksmith from car axles or other salvage. A wood carver uniquely crafts each set of wooden calipers. Multiple pieces of wood are meticulously carved into the nesting set. Themes in dolls Matryoshka dolls are often designed to follow a particular theme; for instance, peasant girls in traditional dress. Originally, themes were often drawn from tradition or fairy tale characters, in keeping with the craft tradition—but since the late 20th century, they have embraced a larger range, including Russian leaders. Common themes of matryoshkas are floral and relate to nature. Often Christmas, Easter, and religion are used as themes for the doll. Modern artists create many new styles of nesting dolls, mostly as an alternative purchase option for tourism. These include animal collections, portraits, and caricatures of famous politicians, musicians, athletes, astronauts, "robots", and popular movie stars. Today, some Russian artists specialize in painting themed matryoshka dolls that feature specific categories of subjects, people or nature. Areas with notable matryoshka styles include Sergiyev Posad, Semionovo (now the town of Semyonov), Polkhovsky Maidan, and the city of Kirov. Political matryoshkas In the late 1980s and early 1990s during Perestroika, freedom of expression allowed the leaders of the Soviet Union to become a common theme of the matryoshka, with the largest doll featuring then-current leader Mikhail Gorbachev. These became very popular at the time, affectionately earning the nickname of a Gorba or Gorby, the namesake of Gorbachev. With the periodic succession of Russian leadership after the collapse of the Soviet Union, newer versions would