I'm hope there is someone here could help point me in the right direction. I have an old pocket watch I inherited from my father. It works well but is impractical for any use I have. It is gold (appears to be solid gold but definitely has wear. Can anyone help point me in the correct direction for establishing a value for it and potentially selling it. Inside the case is stamped a number 1568923 and a four symbol seal. Attached are some photos. The dimension of the case is 1 3/4 inches.