A pair of Russian porcelain Topographical plates, Imperial Porcelain Factory, St. Petersburg, circa 1820-1825. One, painted with a view of the monument of Peter the Great in St Petersburg after Chesky, within a pink and gilt border, inscribed in Russian under base, apparently unmarked, by the Imperial Porcelain Factory, the other, painted with a view of the Pavlovsk Fort, within a blue and gilt border, inscribed in Russian under base, apparently unmarked, by the Imperial Porcelain Factory, 9 3/8 diameter.