Shanghai Ink Factory, Tessai Okina Calligraphy and Painting Treasure Ink, Chinese Antique Ink. [Actual Size (approx.)] Total Length: 13.3cm Width: 3.8cm Thickness: 1.7cm ◆Product Name ~Hui She Cao Sugong Yaoshan's (High-Grade Antique Ink)~ Shanghai Ink Factory Product, Oil Smoke 101 This is a popular ink. This is a Tessai ink from before the 1970s. In this era, it is often said to be a "good Tessai" ink, and it does not have the characters "Kokuka Daiichi" (First in National Glory). However, this ink has "Cao Sugong" and "Kokuka Daiichi," so it can be determined that it is ink from before the establishment of the Shanghai Ink Factory in 1968.