Put on display in honour of 13 servicemen who gave their lives in the period of 1952 to 1987, while serving with the 39.PLM at Mierzecice air base. The plaquard saying so is dated 28 April 2014. This is actually MiG-21PF 1813, the real 1901 is 77km (48mi) away in the Polish Aviation Museum in Kraków.