On plate has a tiny black specs on it. I think it was made.like that because I can not get it off.  Please see photos

This product is a set of four white milk glass dinner plates with a Harvest Grape pattern by Indiana Glass Co. The plates are round and have a diameter of 9 3/4 inches, making them suitable for all occasions. The decorative plates feature a glossy finish and are perfect for adult use. Made of glass and unmarked as to brand, these plates are a charming addition to any table setting with their grape-themed design.