How should you use the Swiss customs framework without erasing Liechtenstein?
Liechtenstein's National Administration says all Swiss laws pertaining to customs, together with other federal legislation needed to operate the customs union, apply in Liechtenstein under the Customs Treaty. It also says Swiss trade and customs treaties with third states apply to Liechtenstein through that treaty.
For a painting leaving Arizona, the importer, broker, or carrier should use the current Swiss customs framework and identify the correct import record rather than searching for a fictional stand-alone Vaduz tariff.
The shared customs territory does not make a Swiss warehouse, airport, or border release the final customer endpoint. The quote must name the entry route, declarant, point of release, post-clearance carrier, and exact Vaduz service level. If the provider's contract ends at a Swiss depot or building threshold, say so. A statement that the work ships to Liechtenstein is only supportable after the carrier accepts the protected dimensions, weight, value, and full address.
