It's not a problem until you get stopped and questioned.
If you travel without the proper documentation, then you risk inspection and confiscation. I would say the risk of problems is much higher with an obviously non-antique instrument that does contain Brazilian Rosewood since undocumented wood from the post-ban years seems to be the focus of the laws.
If you travel without the proper documentation, then you risk inspection and confiscation. I would say the risk of problems is much higher with an obviously non-antique instrument that does contain Brazilian Rosewood since undocumented wood from the post-ban years seems to be the focus of the laws.