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Detailed silver military challenge coin featuring a trident, three submarines, and embossed text.

Detailed silver military challenge coin featuring a trident, three submarines, and embossed text.

Mock up 2" military challenge coin with "NAVO NP43 Submarine Products" arched along top, image of two underwater US submarines (SSBN and SSN), two crossed Tridents and bathymetry contours with various depth changes in center and "Subsidium Submarinum" along the bottom See more