Hi Gemman 10!
In order to illustrate what Trev told you, find bellow pictures of a bread/sweet bun knife and his hallmarks:


Bellow the french Minerva for sterling silver in 925-1000eme or 950/1000eme

Bellow silversmith hallmark:the left one in a diamond for silversmith (in our case Orfèvre Cristofle; you will find always intials in a diamond for sterling silver, of course only if accompagnated with the franch Minerva as said before); the right one indicates the "designer" (in our case Cardheilac; this kind of mark is only find on huge companies silver items with different designers working for)

Of helping!
Regards