Konstantin Thon

Obverse

on the mirror field of the disc the relief image of the National Coat of Arms of the Russian Federation, over it along the rim the semicircular inscription "РОССИЙСКАЯ ФЕДЕРАЦИЯ" (RUSSIAN FEDERATION), framed on both sides by doubled rhombuses, below under the coat of arms: to the left indications of the precious metal and its fineness, to the right the fine metal content and the mint trade mark, at the bottom in the centre, in three lines the inscription "БАНК РОССИИ" (BANK OF RUSSIA), the denomination of the coin "25 РУБЛЕЙ" (25 RUBLES), the year of issue "2017 г." (2017).

Reverse

on the mirror field of the disc the relief image of the Great Kremlin Palace with the outline of the Red Square architectural complex in the background, in the foreground on the right the relief portrait of K.A. Thon, on the left a technical drawing of the Cathedral of Christ the Saviour, above the drawing the inscription in three lines "КОНСТАНТИН АНДРЕЕВИЧ ТОН" (KONSTANTIN ANDREYEVICH THON) and the colour image of the capital of Ionic order.

Authors

The artists: E.V. Kramskaya (obverse), A.D. Schablykin (reverse).
The sculptors: A.A. Dolgopolova (obverse), A.N. Bessonov (reverse).
Mint: Saint Petersburg Mint (СПМД).
The edge: 252 corrugations.