Regarding Ultramarine Ultramarine is a very expensive pigment, and it is assumed to be natural. Since artificial ultramarine began to circulate at a low price after the war, ultramarine from the early Showa era is basically considered natural. Ultramarine is a blue pigment made from azurite, and has been used in art and religion since ancient times as an extremely rare and expensive material. Even now, it is overwhelmingly more expensive than artificial pigments, and it is a color material that symbolizes spirituality and historical value. ▲ Ultramarine (gunjo) Made from azurite, it exhibits a beautiful indigo color and has been used as a pigment (iwa-gunjo, or rock ultramarine) since ancient times. 〇 About This Product 1st bottle: "Ultramarine White" 17.77g "White" is written after "Ultramarine," and no number is written for "white." 2nd bottle: "A Ultramarine" 16.58g "Ultramarine" is printed with the letter "A," indicating that it is of high-quality natural origin. Both bottles have double red line labels on a white background, indicating that they were sold by Kyoto Ebisuy in the pre-war period. The container of the white ultramarine is specifically marked with "Ebisuy Gazarai" (Ebisuy Art Materials). 〇 Containers and Labels: The form of the containers and labels themselves served as proof of natural ultramarine. At the time, they were often placed in glass bottles or ceramic jars, and paper boxes and plastic containers were rarely used. 〇 Label Printing Style: Many labels were printed using letterpress printing or in a handwritten style, with the manufacturer's name (Hokodo, Kissho, etc.) prominently displayed. Since artificial ultramarine was not yet widespread, there was no need to specifically write "natural." However, some were handwritten as "natural." 〇 Price: Labels on other containers at the time indicated a price of 4,000 yen for 10g per ryo (a unit of weight), and these are from the same period. It is highly likely that the buyer purchased these pre-war items after the war. Considering collector value and current prices, the value could be in the hundreds of thousands of yen. The above explanation is based on AI research materials and actual labels, the name of the seller, handwritten materials, and other evidence. The photos and explanations are complete, so please examine them carefully before making a purchase.