Jamaica 10 dollars proof coin. 45mm .925 silver. mintage-8,038. largest coin in my collection. and the copper-nickel version 45mm...mintage-2,608 and German States/Baden 40mm...
And when you are done you can say mine is bigger than yours. I think a gold bar would be a better investment.
164,000 Minted. 2000 grains of silver Currency Balboa (1904-date) Composition Silver (.925) Weight 129.59 g Diameter 61 mm Thickness 4.7 mm Shape Round Orientation Medal alignment ↑↑ References KM# 31
Melt value alone for the Balboa is nearly $100 today, As far as I can see NGC have a proof 1974 with a price of $190 for a PR63 but nothing graded higher. What a 68 or 69 would go for is whatever someone will pay to get one