This is a Vintage Early 1970s Cosom Flying Saucer - Blank, Blue, Pre-Spiral pattern. This is a used disc in fair condition. The Cosom Flying Saucer is truly a minimalist disc with classic early lines. This particular disc has a noticeable antique/vintage feel. It has a completely blank flight plate and cupola, and a simple raised lettering "Made In USA" on the underside. It is a mold 4. Look for my listing of the same disc in red to help round out your set. Thanks for looking!