This is a rare, U.S. Navy, Miller-Dunn #3, brass & copper dive helmet (circa WWII). Helmet 58 lb, 25" tall and 12" in diameter
This type helmet was known as the "Widow-Maker" because it was worn open at the bottom and could easily fill with water and drown the diver. It consists of a tall, copper helmet with a large, brass-framed, rectangular front window and two small round sidelights, brass handle at top, lead plates on front and back of the shoulders, with a brass fitting on side for an air hose.
The front and back weight are stamped: NO.3 DIVINGHOOD, MILLER-DUNN CO. MIAMI. FLA
The brass side plate is stamped with US Navy Patent information.Note: The front window glass has a small break in lower corner, but it could be easily replaced.
Two of the photos show Dr. Spence with this helmet (his favorite). Another shows this helmet in a plexiglass case when it was on display at The Museum (Greenwood, South Carolina), during its July-October 2009 exhibit "Discovering the Treasures of a Lifetime: The E. Lee Spence Collection." For more pictures of the exhibit see: http://www.facebook.com/album.php?aid=2016347&id=1109236999