coin is in very good condition
Authenticity is certified by Numismatic Guaranty Corporation as PF-67 Ultra Cameo
Certification Number is 3159680-003
Country: Russia
Year: 2014
Face value: 25 Rubles
Metal: Silver/.925
Weight: 155.55 g
Diameter: 60 mm
Thickness: 6.6 mm
Quality: Proof
Mintage: 1,500 coins
Grade: PF67 by NGC
Auguste de Montferrand (January 23, 1786 – July 10, 1858) was a French Neoclassical architect who worked primarily in Russia.
His two best known works are the Saint Isaac's Cathedral and the Alexander Column in St. Petersburg.