1792-FM Mexico Silver 8 Reales KM.109 - Very Fine, Heavily Chopped White Medal Gamma rays from the antimony

Gamma rays from the antimony are absorbed by the beryllium atoms and a neutron is expelled by the beryllium atom in the process

If someone buys all four available you'll get them in the connected quad layout

1916 Walking Liberty Half Dollar - Extremely Fine+

1940 Walking Liberty Half Dollar - NGC MS 65 - Gem Brilliant Uncirculated

1792-FM Mexico Silver 8 Reales KM.109 - Very Fine, Heavily Chopped White Medal Gamma rays from the antimonyKM# 109 Denomination 8 Reales Country Mexico Government Spanish Colony Ruler Charles IV Coinage Type Milled Coinage Mint Mexico City Composition Silver Fineness 0. 896 Weight 27. 0674 g 0. 7797 oz ASW Description Obverse Armored bust of Charles IIII, right Description Reverse Crowned shield flanked by pillars with banner