3 Mikasa Elegant Brown Tea cups

Set of three Mikasa mugs in deep brown. Ideal for hot beverages. The image shows the base of a Mikasa Cera-Stone piece, specifically identified by the model number "01850". While the user's query mentions "tea cup 1850," the "1850" in the image refers to the Mikasa model number, not the year of manufacture or a specific type of tea cup like those from Foley 1850 EB.  Explanation: Mikasa Cera-Stone 01850: The image clearly displays "Mikasa Cera-Stone 01850" on the base of the item. This indicates the brand, material, and specific model number of the dinnerware piece. "OVEN TO TABLE TO DISHWASHER JAPAN": This text further describes the item's properties, indicating it is safe for oven, table, and dishwasher use, and was manufactured in Japan. Not a "tea cup 1850" in the historical sense: The "1850" on the Mikasa item is a product identifier, not a reference to the year 1850 as might be associated with vintage or antique tea cups like those from the Foley 1850 EB brand mentioned in search results. Mikasa Cera-Stone items, including the Eastwood pattern which includes mugs and cups, were produced later, with patterns like Eastwood being in production around 1974.