Galician Gotta 91 Extra Quality -

In automotive and high-output engine management, 91 octane represents a premium fuel tier designed to withstand high compression ratios without detonating prematurely.

"91" may refer to a brightness or GSM (grams per square meter) rating for high-end "Extra Quality" stationery or artistic paper manufactured in Galicia. Could you clarify if you are looking for a technical specification sheet for a physical paper material, a historical document , or a specific brand of rolling paper galician gotta 91 extra quality