Collection of Museum of Artillery, Engineer and Signal Corps in St. Petersburg.
Cross that allegedly belong to Nicholas Nikolaevich the Elder (awarded for distinction in the Battle of Inkerman in 1854).
Gold, enamel.
Size 35 × 30.1 mm.
Weight 6.38 g.
Cross that allegedly belong to Nicholas...
4th class order of st. george
4th class order of st. george of granddukegranddukenicholasnikolaevichthe elder
granddukenicholasnikolaevichtheyounger
imperial russian order of st.george
russian military order of st.george
награды императорской россии
орден святого георгия 4-й степени
орден святого георгия великого князя
ордена императорской россии
Grand Duke https://en.wikipedia.org/wiki/Grand_Duke_Nicholas_Nikolaevich_of_Russia_(1856–1929) was awarded with 4th class St.George order in 1877.
Looks like he is wearing different cross in this photo.