JENAER GLAS teacups & saucers, set of 2. A tea strainer is also included. (Brand unknown) A heat-resistant glass brand that Germany is proud to present to the world. The material is borosilicate glass, and it boasts high durability with a heat resistance of 300 degrees Celsius. Born in Germany in 1920, it became synonymous with heat-resistant glass in Germany. It is characterized by its simple and functional design. Used only a few times, it has been stored in a cupboard. There are no scratches or stains, and I think it can still be used. This is my subjective opinion, so please feel free to ask any questions until you are satisfied. Additional photos are also available. It will be wrapped in bubble wrap and shipped. #JENAER GLAS #JENAER GLASS #Germany #Teacup #HeatResistantGlass