As the name suggests Balloon Molds were once used to make balloons. These were dipped in liquid rubber and then were set to let it dry. The shape of the balloons depends on the shape of the mold. This listed balloon molds produced round balloons. We may also have other shapes available. Please ask if you need more info. You can install this on wall as an accent piece- it is definitely a conversation starter! As this is an antique item there are possibilities of vintage flaws, patina, scratches and marks and slight color variations. 23 x 18 x 5. Listing for 1 item only. The item “Antique Balloon Mold, Art Conversation Piece, Circus Theme Decor, Industrial Sty” is in sale since Tuesday, March 24, 2020. This item is in the category “Antiques\Mercantile, Trades & Factories\Industrial Molds”. The seller is “goldenoldiesusa” and is located in High Point, North Carolina. This item can be shipped to United States.