That is a very early set of Glens which I played for many years.

Cocus, ivory, and plain silver.

The set had started out life as a full ivory set and half-silvered in India. (An expert said that the silver was obviously Indian. I don't know how one could tell that.)

About that dirk, it was lovely and I wish I still had it. It appeared to be a high-quality Scottish-made dirk, though modern. The mounts are gilt, in a lovely Celtic pattern. The handles were hand-carved wood. Oh I wish I had never sold that dirk. I picked it up from a piper friend on some kind of swap. I can't even remember what I swapped for it!