Beautiful.
In case you didn't know, the pattern is called 'Chrysanthemum' (sometimes referred to as 'Indian Chrysanthemum', although it actually has Japanese inspiration). Edward C. Moore, Tiffany's chief designer between 1869-1891, had admired Japanese art and design at the 1867 Exposition Universelle in Paris, and began working with Charles Grosjean to incorporate Japanese animal and plant motifs into Tiffany pieces. Your knife is one of Grosjean's designs, first introduced in 1880.