An original M2 Paratrooper Helmet from World War II, specifically from the 101st Airborne Division, 506th Parachute Infantry Regiment, 2nd Battalion, Easy Company (also known as the "Band of Brothers"), would be a very rare and valuable collector's item. The "Swivel Bail" helmet refers to a specific type of helmet used by U.S. airborne troops during the early period of the war, including the Normandy campaign.

Here are some key features of an original M2 "Swivel Bail" Paratrooper Helmet:

1. Swivel Bail Suspension Points.

• With this type, the bales can rotate, meaning they can move and provide greater flexibility for attaching and adjusting the net.
  This system was introduced during 1942 to improve the ease of attaching the helmet cover, especially in situations where the soldier wanted to quickly adjust his helmet or replace the net.

2. Unique Markings and Insignia

• Helmets that belonged to specific units such as Easy Company (E-Company) may bear markings such as a "spade" symbol of the 506th PIR or other identifying marks of the 101st Airborne. Some helmets have hand-painted rank distinguishing marks or unit numbers.

3. Interior and Chin Strap.
An original M2 helmet often contains a fiber liner with leather and fabric parts that have aged over the years, recognizable by discoloration and wear. The chin straps are usually made of lead or cotton material and may sometimes still contain stamps with production or serial numbers.

4. Damage and Discoloration.

• Due to heavy use and aging, an original M2 Paratrooper helmet often shows obvious signs of wear, such as dents, rust, paint wear and discoloration. These signs are crucial in proving authenticity.