Claymo Climovichie's probe, Sirotkin Ivan, initials of I-C, 1864.

The stigma of the test master of Sirotkin Ivan, translated from Kazan, 1864. In the upper part of the stigma, the Master’s initials, separated by a point (and “C”). In the middle, the stigma is separated by a white line. In the lower part of the year “1864”. Form: rectangle