Badge for Graduation from the Riga Polytechnical School.
Badge for Graduation from the Riga Polytechnical School. P/B 2.6. Silver, Gilt Silver. By the firm of Dmitri Osipov. Oak and laurel wreath, Imperial crown atop, with letters PПУ, compass and triangle below. Hallmarked “84*” and maker’s mark “ДO”. Pinback. Condition: Choice