年份：約1970年代 工序：生茶 茶廠：勐海茶廠 倉儲：自然倉 數量： 七片 總重量：約319g, 323g, 318g, 304g, 323g, 302g, 335g
This lot has been well-preserved in natural storage. The inner ticket identifies it as the "Serious Formula," considered the finest and earliest among the three variations, which also include "Moderate Fermentation" and "Intensified Sprouting." This version, marked with a green logo, predates the later yellow-logo edition. Due to its rarity, only a limited quantity remains available.