St. Petersburg, photo studio of N. Lorenkovich, 1874-80s.
Size of photos: 8.7 x 5.4 cm and 8.6 x 5.5 cm; size of passepartouts 10.4 x 6.3 cm and 10.3 x 6.4 cm.
Photos are glued on branded passepartouts.
Minor staining, yellowing on edges.
Grand Duke Konstantin Nikolaevich Romanov (1827-1892) - second son of emperor Nicholas I, general admiral.