Up for sale is a used Vintage 1940's Imperial Lifeboat Davit Co Brass Porthole Nautical C- Inch C-97 . It is a 3 dog Brass porthole with a 7 oe" opening and was manufactured in the 1940's.The wing nuts swing and turn. Weighs slightly over 6lbs. Overall diameter is 9oe" and has a thickness of 1 OE". Up for sale is a used Vintage 1940's Imperial Lifeboat Davit Co Brass Porthole Nautical C- Inch C-97 . It is a 3 dog Brass porthole with a 7 oe" opening and was manufactured in the 1940's.The wing nuts swing and turn. Weighs slightly over 6lbs. Overall diameter is 9oe" and has a thickness of 1 OE". Recommended products Provided by Antique J Guichard Co Brass Navy Maritime Ship Oil Lamp Model 1864 Paris View product Scissors Mouchette Snuffer Candle Candleholder Brass Scissors Unmarked View product Charles Courtland Case 3 Cs St Louis MO Co Button Glass Advertising Paper Weight View product Vicky Industria Peru Copper 925 Sterling Silver Mayan Bird Bowl 5.5 x 2.5 Inch View product VTG Lucite Reversed Carved Painted Swan Goose Water Drawer Pull Handle 2 1/8 View product