POLAND. 10 Zlotych Quartet (4 Pieces), 2002-06. All PCGS or NGC Certified.1) 2002. PCGS PROOF-69 Deep Cameo. KM-Y-434. Struck to commemorate World Cup Soccer.<p>2) 2004. PCGS PROOF-69 Deep Cameo. KM-Y-517. Struck to commemorate the Olympics.<p>3) 2006. NGC PROOF-69 Ultra Cameo. KM-Y-556. Struck to commemorate the 2006 Winter Olympics featuring Figure Skating.<p>4) 2006. NGC PROOF-69 Ultra Cameo. KM-Y-555. Struck to commemorate the 2006 Winter Olympics featuring Snow Boarding.<p>