Strela 3017 KL1 chronograph

Strela 3017 KL1 chronograph, this particular model is known as the first watch in the open space. Soviet astronaut Alexey Leonov wore Strela Class 1 when he stepped out of Voshkod 2 and became the first person to leave spacecraft and conducted a 12 minute spacewalk. The event took place on March 18, 1965.

My watch was produced in the early 60’s and seems like it was used in former Czechoslovakia. Unfortunately I was’nt able to establish what is SVB and Ostrava is a town in today’s Czech Republic. Please notice that the case is typical for this model and the lugs are slightly thinner and rounded comparing to other watches with 3017 inside. 

Strela 3017 KL1