To the left of the signature - this is not a year, of course - this double ff at the end of the name. Bogolyubov died in 1896.
Option number 1. In Geneva, he lived in 1854. Figure, it is obvious from nature - thus, your job becomes 40 years older
Lake Geneva, he wrote, at least until 1858, because in this year for a number of works, including a picture of the "Type of Chillon Castle on Lake Geneva, was awarded the title of academician.
Option number 2 (and I to him intuitively more inclined). This is not Geneva, a Genoa (Italian - Genova). During pensionerstva (1854-1860) Bogoliubov been in Italy, wrote it. At the thought of Genoa, I have put in a triangular sail. In full sail, I know nothing, so aware of the audience ask giggle a little quieter, but I remember that the triangular sails were in Turkey, it seems - in short, in the East. And the mountains too, there are quite appropriate. In short, the general feeling of the sea port, but not the lake.
vit, read a detailed biography of hierarchy, look, I've been whether it in Genoa. If yes, then it will be easier to dig.
Good luck in your search and examination!