Polish experimental glider <a href="https://en.wikipedia.org/wiki/SZD-17x_Jask%C3%B3%C5%82ka_L" class="extiw" title="en:SZD-17x Jaskółka L">SZD-17x Jaskółka L</a> (SP-1506) in the Polish Aviation Museum.
Michał Derela <a href="//commons.wikimedia.org/wiki/User:Pibwl" title="User:Pibwl">user:Pibwl</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>