Vintage Stemmed Blue Eye Cup Embossed with "M" in a Circle and "12" on Bottom

This product is a vintage stemmed blue eye cup that is embossed with the initials "M" in a circle and the number "12" on the bottom. It appears to be a collectible item that would appeal to enthusiasts of unique and nostalgic pieces. The design and markings on the cup add to its charm and make it a distinctive addition to any collection. This vintage item may hold sentimental value or simply be appreciated for its aesthetic appeal.  Measures 2-1/2" tall.