Markings on side. Markings on centre hairline. Markings on additional hairlines. Slide reversed. Other side.

The above replica of Nestler 37 belonged to Sergei Korolev, the Soviet rocket engineer, who put the first man into the Earth's orbit (pictured on the photograph together with Yuri Gagarin). The R-7 rocket, designed by Korolev, commonly known as "Soyuz", is still in use today, even by NASA.

Interestingly, an earlier version belonged to Wernher von Braun, the designer of A4 rockets, which were used against UK during World War II. He was also the father of the American space program.