Identify Collectible Glassware Marks and Signatures With This Gallery
Use this illustrated gallery of marks to help you identify your antique and collectible glass pieces.
"I inside a Diamond" mark on glass bottles ~ Illinois Glass Company
"I inside a Diamond" or "Diamond I" trademark on antique glass bottles, jars, jugs, used by Illinois Glass Company of Alton, Illinois.
How to Identify Antique Glass Bottles
Collecting old bottles and jars is a hobby sure to evoke a feeling of nostalgia--bringing you hours of enjoyment. It may also be one way to put a little cash in your pocket. The value of historic bottles is escalating, sometimes garnering hundreds, even thousands of dollars each. The key is knowing how to identify ...