Russian Empire. Golden chest sign for ladies for long-term activity (service) "XXV" years with diamonds in the position of a foreman or teacher. On the catching hook oval test mark "56" and the coat of arms of S. Peterburg, the name of the master "IC" - Katorskiy Ilia, the owner of the jewelry workshop 1882-1908 years. Great work! A very rare and chic thing!
Weight 8.4g, diameter greatest 27.7mm.