This is a vintage amber art glass sphere paperweight featuring a mid-century design with interior controlled air bubbles

The estimated market value for a 5.5" vintage amber controlled bubble glass sphere typically ranges between $60 and $160 USD, depending heavily on its origin, maker, and weight.

Value Breakdown by Maker

• Murano / Italian Art Glass (Galliano Ferro or generic Bullicante): If the piece is verified Italian Murano glass, a substantial 5.5-inch heavy orb usually sells on platforms like Etsy and eBay for $120 to $160+ USD. A 5.5" solid glass sphere of this type typically weighs between 7 and 9 pounds.

• American Art Glass (e.g., Pilgrim Glass): If it is an unmarked or American-made vintage piece, the value generally falls between $40 and $90 USD.