This vintage 9" porthole with a 6" window with back screen, flanges, and back rings is made of brass and is an antique original piece.  The back rings are 3 inches in height and 6.25 inches in diameter.  The porthole exudes a nautical charm and is perfect for adding a touch of maritime history to any space. Although it may need some TLC, its unique design and craftsmanship make it a desirable collectible item for those with a passion for antiques and maritime memorabilia.

If I can be of further assistance, please let me know.  Thanks for looking.