A Fabergé gold, enamel and jewelled tie pin, workmaster Michael Perchin, St. Petersburg, pre-1896

the top formed as a lyre set beneath the Imperial crown and surrounded by a ribbon with commemorative inscription in Cyrillic Koncert v Kremle 1898 and hung with an old mine diamond, with workmaster's initials, 56 standard

In apparent good condition consistent with age. Stones are bright and lively with enamelling in good condition.
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It is most likely that this pin was produced by Fabergé workmaster Michael Perchin specifically to commemorate the 1898 concert in Kremlin. The concert marked the opening of the monument in the Kremlin to Alexander II, who was assassinated by the members of Narodnaya Volya.

The work on the Kremlin monument by Alexander Opekushin, Petr Zhukovsky and Nikolai Sultanov began in 1893 and took five years to complete. On the 16^th August 1898 the monument was finally unveiled. The ceremony was attended by the Imperial family  and was accompanied by various celebrations including the aforementioned concert.  

A comparable example of tie pin decorated with State emblems is illustrated in Ulla Tillander-Godenhielm, The Russian Imperial Award System 1894-1917, Helsinki, 2005 p. 192