Reverse Proof Gold Libertad Collection, All 5 years of Issue in 1oz NGC PF70 ER & FR. 2018 – NGC PF70 EARLY RELEASE. 2019 – NGC PF70 FIRST RELEASE. 2020 – NGC PF70 FIRST RELEASE (KEY). 2021 – NGC PF70 FIRST RELEASE. 2022 – NGC PF70 FIRST RELEASE. 2018 – 1000 Mintage. 2019 – 500 Mintage. 2020 – 250 Mintage (key date). 2021 – 500 Mintage. 2022 – 500 Mintage.