Pair Antique Vintage Bronze Clamshell Vent, Boat, Marine, Nautical

  
Measure 4 1/4" x 4 3/4". No makers mark found but, possibly A. Amesbury, Mass since I also have or had several other items with this mark, removed from the same 1940's wooden sailboat. The item "Pair Antique Vintage Bronze Clamshell Vent, Boat, Marine, Nautical" is in sale since Friday, March 30, 2018. This item is in the category "Antiques\Maritime\Other Maritime Antiques". The seller is "bbriley" and is located in Waverly Hall, Georgia. This item can be shipped worldwide.