This, at the very least, is the straightest answer I can provide. All luthiers must catalog and have paperwork for their supply of wood, purchasing of future wood stocks as far as their own workshop is concerned and paperwork for that particular guitar using registered woods. That paperwork must accompany any guitar sent to me, which, of course, will then be forwarded to you as part of the “paperwork” package that I provide with every guitar. I wouldn’t suggest losing it as it will be an important part of your provenance for any particular instrument, proof of legality, allowing you to register with USF&W so that you may travel abroad with your guitar, if you so wish.Please note that many stocks from luthiers are pre-Convention, but if the guitar has a date of 2017 or later on it, they may not have the paperwork to define “legal” as per CITES conventions. Bear in mind that this caught many if not all luthiers by surprise. They didn’t think to keep origin paperwork, or they inherited the woods used from an older luthier, etc. No paperwork means no International Transport.What that means is the guitar cannot be legally transported along International lines.