Vintage or antique man overboard buoy or marker made by the Easco company around the 1930's.
It has an electric light which should turn on when it is upright in the water. It is battery-operated, it has not been tested. There are currently no batteries inside.
It is made of wood and brass and weighs almost 1.5 kg.
Very nice piece for the nautical collector!

Please take a good look at the photos for a good impression.

The  length of the buoy is around 43 cm. ( 17 inch).