Don Julio 1942 is technically an anejo as it is aged for only 2 1/2 years in used American oak barrels, though it misses the extra anejo qualification by only 6 months. 1942 is the year that Don Julio Gonz les established his distillery, Tequila Tres Magueyes. This Highland tequila, along with their Real bottling, is distilled a 2nd time in a smaller stainless steel pot still that has a maximum capacity of 3 barrels per distillation.