This is a set of knife and fork, the ivory handles carved with grotesque faces and maskes. The unidentified mark 'IR' on the blade probably stands for the cutler's initials. The style of the carving suggests these pieces are Netherlandish and date from the late seventeenth century.
Knives have been used since prehistoric times, but the history of knives, forks and spoons for eating in Europe probably commenced in the fourteenth century, and their use became accepted by the sixteenth century. Until the late seventeenth century it seems to have been common practice for people to carry their own cutlery, often in a leather case.
Ebony, ivory, fish skin, tortoiseshell, amber, bone, horn and shell were all popular for decorating cutlery. Around 1730 ceramic handles were introduced to Europe from China. Although cutlers were required by their guilds to be able to make a complete knife, handles of carved ivory, silver, bronze and glass were usually imported or made by specialist craftsmen.