One of the most sought-after types of diving helmets among collectors are shallow water models. Often boasting unique designs, ease of use, and relatively high production numbers, they are prized for their accessibility. This exceptional helmet, however, transcends the typical shallow water helmet, boasting rarity and intrigue.
 
The Griswold helmet, a brainchild of commercial diver, engineer, and inventor Chuck Griswold, is a testament to ingenuity. Patented and produced in limited quantities, primarily in bronze, it has long captivated collectors who know about them. Until now, only a single cast iron example was believed to exist.
 
This remarkable specimen, unearthed in the Seattle, WA area and discreetly held for decades in a private collection, is a true helmet treasure. The cast iron body has been painted in a deep red finish which was applied to it long ago. The surface is still in great shape with only a few minor scuffs visible. Brass port guards shield the glass lenses, while the overall structure remains remarkably intact, free from cracks or breaks. Weighing in at approximately 70 pounds, it is a substantial and impressively designed helmet.
 
Griswold helmets are legendary among collectors, rarely appearing on the market. In the past two decades, we have encountered only one other example, and this is the first cast iron specimen to surface. Whether you are an avid collector of shallow water helmets or a discerning investor seeking unique and exceptional pieces, this Griswold helmet is an extraordinary opportunity to own something only one other person has!