The metal flip calendar kept in the collection of the Museum of the Romanovs’ Family was released in Moscow in 1913 timed with the 300-year anniversary of the ruling dynasty. It was made of aluminum that was a very expensive material at that time: in pure state, it is not found in nature and prior to the invention of electricity it was impossible to extract it on an industrial scale.
The mechanical calendar consisted of a tin base which a decorative aluminum plate was superimposed on. It was ornamented with relief profiles of two monarchs facing each other – founder of the Romanov dynasty Alexey Mikhailovich and ruling Emperor Nicholas II. Under them, there are holes of different diameter through which the date, month and day of the week were visible. The date could be set using metal rollers. Thus, the calendar was called a flip calendar: one could ‘flip’ it to the required date.
The mechanical calendar consisted of a tin base which a decorative aluminum plate was superimposed on. It was ornamented with relief profiles of two monarchs facing each other – founder of the Romanov dynasty Alexey Mikhailovich and ruling Emperor Nicholas II. Under them, there are holes of different diameter through which the date, month and day of the week were visible. The date could be set using metal rollers. Thus, the calendar was called a flip calendar: one could ‘flip’ it to the required date.