This past September I was fortunate enough to purchase a bottle each of Los Abuelos Repo & Anejo (Lot 7) in Puerto Nuevo. This was during the fantastic grilled lobster lunchoen that Mark from Poco Tequila sponsors each year. It was an honor to meet Guillermo Sauza and he was kind enough to offer all of his tequilas at special discounted prices for all who attended. The bottles I have are both 40% and have the tax stamp as well. The bottle of Fortaleza Blanco (Lot 6) I purchased here in the US is 40% as well. OBTW....IMHO...the Repo and Anejo is some of the finest tequila I have ever tasted...distilled the old fashioned way with no shortcuts!
Salud Guillermo y muchas gracias!