Vicuna (except from Argentina) is still CITES Annex II, which means that the export and re-export of the animal or any derivative must have a CITES certificate[1]. The Argentina vicuna is marked as Annex I (commercial export prohibited).

If the CITES DB is updated (no idea, sorry - and there's no data for 2018), in 2017 very few such trades were actually recorded[2].

I visited Peru a few years ago and there the vicuna products (retail) were accompanied by a certificate needed to get the products through customs.

[1] https://cites.org/eng/app/index.php

[2] https://trade.cites.org/en/cites_trade/download/view_results...

I got it from this online shop:

https://www.alpacacollections.com/100-vicuna-scarf-10549.htm...

I had to pay a (hefty) custom tax to import it, but I didn't had any other problem bringing it into the EU.