Germany
"Von Mackensen" silver Proof Medal 1915 PR63 Ultra Cameo NGC, Zetzmann-4103. 34mm. Sharp and fully mirrored, the fields revealing an appealing intermingled steel-blue, silver, and lilac tone.
https://coins.ha.com/itm/germany/germany-von-mackensen-silver-proof-medal-1915-pr63-ultra-cameo-ngc-/a/61194-98096.s?type=CoinArchives61194
HID02906262019
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Estimate: 100-150 USD