Exemplary badge made by Fabergé workshop https://asiamedals.info/forums/jetons-and-badges-made-by-faberge.610/
Silver, gilt, blackening.
Size 38 mm.
.
Marked KF /КФ/ for Carl Fabergé and "Faberge/Фаберже".
St. Petersburg assay office silver hallmarks from 1908+ time period.
Badge marks...