A seal. The handle is probably wood with a black glossy coating. There is a piece of thin metal with a decorative border arttached to the handle, and the bottom is metal with a letter engraved into it.
The stamp is likely an "E" but it looks like an "&".
Above the attached metal piece, three letters can be seen carved into the wooden handle, "NCE" probably more is there, but it is covered by the metal.