I was happy to find your site. I graduated from MACV Recondo School in 1968. I was with the 101st (ABN) 3/506th E company (LRRP)

Front of Medal: Saint Michael Patron of Paratroopers, "Protect Us"
Back of Medal: 325 AIR Distinctive Unit Insignia (DUI)
Type of Metal: Nickel Coated Brass
Shape: Rectangular, with Twist Loop
Color: Antique Silver color
Dimensions: 1.5" x 7/8", including loop
Soldiers traditionally wear this medal on their Identification Tags ("Dog Tags"), Key Ring, Rosary, or sometimes worn on a chain around their neck. These are the same ones that have been handed out for years by military chaplains. Medal comes with stainless steel ball chain.