One of these works of art includes a train with coaches for mail, ladies only, smoking, non-smoking, and chapel.
One of these works of art includes a train with coaches for mail, ladies only, smoking, non-smoking, and chapel. One of  these works of art contains two red crosses commemorating the dedicatee's mother's service in the Red Cross. One of  these artworks functions as a clock that contains a stationary bottom part with a diamond hour-hand shaped like a bow  and arrow and a mobile top part adorned with lilies that spins to tell the time. The largest of these artworks contains a  scale depiction of the Cathedral of the Assumption topped with an enormous gold dome, sits on a white onyx plinth, and  plays the "Cherubim hymn." These works, some of which were made for the (*) Kelch family, contain a "surprise," which  was often a miniature portrait or a mechanical animal inside. For 10 points, name these Easter gifts given to the Russian czars by  a namesake family of jewelers.
One of these works of art includes a train with coaches for mail, ladies only, smoking, non-smoking, and chapel.
Faberge eggs [prompt on partial answer; prompt on Romanov/Russian/Easter eggs; accept Yaitso Faberzhe]