This appears to be an antique "Genkotsu" (fist-shaped) glass from the Taisho to early Showa era. While "Kensaki" (sword-tip) glasses and "Ume" (plum) glasses are fairly common, Genkotsu glasses are quite rare. As you can see in the last image, unfortunately, the bottom is cracked. However, the crack doesn't go all the way through, so it doesn't leak. I've used it myself as a whiskey glass, and it's perfectly usable without any leakage. Size: Diameter 8 cm, Height 10.2 cm Thank you for looking. Type: Sake vessel #KensakiGlass #UmeGlass #TaishoEra #Glass #PressedGlass