SEAL Sub Delivery Team One SDVT-1 Mark 11 / MK XI Mini Manned Submarine Blue Version Navy Challenge Coin EMS/Paramedic On 19 April 1969 the

On 19 April 1969 the squadron began combat operations

2 1/4 x 1 1/4 inch Challenge Coin

which is not a valid Roman Number

It was headquartered at Lackland Air Force Base

SEAL Sub Delivery Team One SDVT-1 Mark 11 / MK XI Mini Manned Submarine Blue Version Navy Challenge Coin EMS/Paramedic On 19 April 1969 theThis coin is approximately 3 inches in diameter. There appears to be 6 different versions of this coin made: 1. Blue, 2. Red, 3. Antique Bronze, 4. Hologram Red, 5. Silver Finish, and 6. Oil Drip NOTE: Images have been blacked out to deter fakes being made. The SEAL Delivery Vehicle (SDV) is a manned submersible and a type of swimmer delivery vehicle used to deliver United States Navy SEALs and their equipment for special operations missions. It is