Russian Empire, Saint Petersburg
A. Tillander firm
Gold, sapphires, diamonds
Diameter 8.5 cm
Firm mark: "АТ", gold alloy: "56", certificate of St. Petersburg district assay administration with the inspector's initials: "AP" (A. Romanov)
Golden tie pin, the head is crowned with the letter "В" made of rose cut diamonds in the framing of stripes made of blue sapphires intersecting in the shape of a lozenge, the Imperial crown made of old cut diamonds and rose cut diamonds is on the top.