This is a glass decanter or vase, likely, with a striking, vibrant cobalt blue color. The following description is based on AI image analysis: 【AI Reference Information】 This is a glass vessel with a bulbous, rounded body and a long, slender neck, resembling a **"tsurukubi-gata" (crane-neck shape)**. It is similar in shape to pitchers, vases, and interior design items. There are several possible origins, including Spanish glass products and works that reinterpret the form of Japanese porcelain vases in glass. 【Seller's Comments】 ・I do not have specialized knowledge, so I do not know the details. ・There is a mark (stamp) on the bottom, but the artist's name and manufacturer are unknown. ・Please check the images and make your own judgment. 【Condition】 ・No cracks or chips are visible. ・Slight signs of use on the bottom. ・Can be used practically and decoratively without any problems. 【Examples of Use】 ・Vase ・Pitcher ・Object, interior accent ※This description includes AI references and does not guarantee the exact origin or authenticity. ※Please purchase only if you understand that this is a used/vintage item.