Set of four 10 zloty collector coins:
- 10 zloty 2015 100th anniversary of the Warsaw University of Technology
- 10 zloty 2016 200th anniversary of the University of Warsaw
- 10 zloty 2017 Soldiers of the unbroken "WITOLD".
- 10 zloty 2018 125th Anniversary of the Juliusz Słowacki Theater in Cracow.
Sterling silver '925', total weight 56.56 g