The glass is excellent with no chips or cracks. It is heavy, weighs over 4 lbs. But the type of metal is unknown. From a non-smoking non-pet home.The item "Vintage Ship 10 (incl frame) Fixed Port Hole with Double Convex Glass Panes" is in sale since Monday, March 1, 2021. This item is in the category "Antiques\Maritime\Maritime Portholes & Hatches". The seller is "ba615" and is located in Seal Beach, California. This item can be shipped to United States.