German States
Prussia. Wilhelm I gold 20 Mark 1871-A MS65 NGC, Berlin mint, KM501. Sparking luster adorns the fields with a razor-sharp strike that emboldens the design. No noticeable marks that catch the eye's attention. The single finest graded example at PCGS or NGC and as such, a very important coin for the collector seeking to assemble a "finest known" set.
Estimate: 3000-4000 USD