I wanted to let you know that someone has seen your question. I will forward this to the expert that yourequested to let him know a question has been posted for him.I will opt out of this, so he can address this as soon as he signs in.
Just letting you know I got the coffee grinder, I'll have an answer for you as soon as I can.
This is a neat piece of useful folk art, for sure.
Scottie dogs became the height of fashion in the 1920s and 1930s so this is the probable date for yours.
It was made in Germany and example of Black Forest or Schwarzwald carving. The coffee grinder is almost certainly by Peter Dienes (tradename "PeDe") or Robert Zassenhaus (early models were unmarked, later ones have "R.Z." embossed on the metal mill hopper, or "Zassenhaus" on the crank handle) and these were made by the thousands in Europe at the time as a wall mounted design with a coffee bean silo made in porcelain. This type sells on the secondary market in the range of $60 - $100, so would have a full retail/insurance value of at least $200.
However your figural version is very rare and would definitely add a good premium. The missing tail on the Scottie notwithstanding, yours would sell at auction in the range of $120 - $175.
Full retail/replacement/insurance value: $350.
Hope this helps!
PS. I meant to add that the wall-board is nicely inlaid with marquetry and the board most likely 'borrowed' from an earlier piece of furniture or decorative panel, so I would class the whole ensemble, as "one-of-a-kind folk art" rather than as any kind of organized factory production. Best, R.