This is a vintage, Mid Century Milk Glass planter or flower base (vase) featuring embossed grapes and grape leaves. This vintage planter is unmarked but appears to be from the Indiana Glass Colony Harvest Milk glass grape collection from the 1950s. The antique square vase belonged to my mother and has been in the family for as long as I can remember (to at least the 1960s). My mother used the milk glass vase as a base for flower arrangements. The vintage Colony Harvest vase is in wonderful condition, free from cracks. The antique milk glass measures about 4.5" wide and 4" tall. According to the Indiana Glass website, the Harvest line was created in the 1950s and included an array of dinnerware from plates to serving pieces to cake stands to compotes to vases. The lovely, snowy white milk glass items were handmade and called the Colony Harvest line and trademarked to the Lancaster Colony Corporation and produced under the Indiana Glass name. The line continued into the 1960s and offered through S G green stamps in some states. None of the Harvest molds have been used since the mid 1980s and Indiana Glass closed in 2002.