I have some Monte Canarios, La Regentas, Don Xaviers, and La Nubias...all rolled in the Canary Islands for the European market that are probably ten years old. Despite the Canary Island manufacturer's claim of growing high quality, indigenous brena tobacco for their cigar industry, it was a crock par excellance. Virtually all Canary Island cigars, not destined for the U.S., were a blend, of which half the blend was generally Cuban leaf. The Canary Islands imported Cuban tobacco long before Castro came to power.
Canary Island cigars, specifically made for the U.S. may have had some local leaf because they were very mild.
Because the boxes said "Made in the Canary Islands" if one desired to import Canary Island cigars from outside the U.S., there was rarely a problem with U.S. Customs.