Uncertain as to where to direct my questions.

[MaxPowers]

Hi all, As the title says, I'm having some difficulties as to where I should direct my questions. I'm new to this forum but not to watches (I'm a watchmaker). In my years as a watchmaker, I have collected a number of watch parts (dials, crowns etc. for Rolex, Omega and more) which I'm looking to sell. I would like to reach as far as possible into the world, but I have never sold anything outside Europe and I'm a bit uncertain about which rules/laws apply to selling/exporting parts (new and used). What are your experiences with dealing (parts only so far) abroad? Anything good/bad/difficult?
Again I must apologize if my questions are asked in the wrong area of the forum. :)

Cheers and TIA.

Ps. I live in Denmark.