Bronze oval porthole or opening portlight with 2 locking dogs at bottom. Needs new neoprene seal to properly secure. hinges from the top. Had a bronze stay or prop on right which was broken.Glass is missing. I used this as a picture frame, but could be also used in a door, as kitchen of a nautical restaurant that needs to be seen through before opening.. This came from a 70 foot wooden ketch I owned in the 1970's, I do not know its'age. Marked A2900 A8192 and a makers' mark HB over W in a shield. Opening is 13.5 inches wide, 7 inches high,. Overall size is 17.5 inches wide, 10.5 inches high