The 3KA-2 or Vostok 3A-2 capsule, which flew into space on March 25, 1961. This mission, called Korabl-Sputnik 5 by the Soviet press, carried a mannequin and a variety of biological payloads, including a dog named Zvezdochka. It was the last unmanned flight of Vostok before Yuri Gagarin's flight on April 12.
This capsule was at the Omniplex museum in Oklahoma in 2004 when I saw it. In 2011, it was sold at an auction in New York City for $2.9 million. It is now back in Russia.














