Capsule, Mercury #12B


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

Mercury spacecraft 12 was originally delivered to Cape Canaveral as a backup for the MA-8 capsule (Sigma 7 flown by Walter Schirra). However, the capsule was returned to McDonnell and reconfigured for an extended 1-day Mercury mission. This reconfigured capsule, labeled 12B, was never assigned to a flight and thus was never re-delivered to the Cape or flown.

In 1967 NASA transferred Mercury 12B to the Smithsonian Institution.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum

Credit Line

Transferred from the National Aeronautics and Space Administration


  • Skin & Structure: Titanium
  • Shingles: Nickel-steel alloy; Beryllium shingles
  • Ablation Shield: Glass fibers, resin


Overall: 5ft 8in. x 6ft 6in. (172.7 x 198.12cm), 740lb. (335.7kg)

Country of Origin

United States of America



Inventory Number