1863 10C Ten Cents, Judd-329, Pollock-399, Cassel-26, Low R.6, PR65 PCGS....

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1863 Postage Currency Ten Cents in Tin
Judd-329, PR65
Ex: Bass

1863 10C Ten Cents, Judd-329, Pollock-399, Cassel-26, Low R.6, PR65 PCGS. 21.1 grains. Ex: Bass. Standard Postage Currency obverse and reverse. Struck in tin with a plain edge. Patterns struck in tin are rare, and high-grade examples are even rarer. The composition of this piece explains a great deal about why this piece has survived in Gem condition. SEM-EDX testing conducted by QC Metallurgical on certificate number 60488.65/5500637 revealed the composition as: 96.7% tin, 2.9% iron, and 0.4% silicon. The iron would have been a natural alloy metal added to the tin to strengthen the coin's composition. But silicon was found with the iron ore. Silicon is never found in nature in a pure state. It this case it bonded with iron to produce ferro-silicon, with the result that the iron strengthened the composition and the silicon helped prevent oxidation. According to the George Eavenson Collection of 1903 (Chapman Brothers), 39 pure tin coins were struck in May 1863. The surfaces are exceptionally bright and reflective with a rippling effect in the fields. No toning is present.
Ex: Massachusetts Historical Society and Appleton Collection (Stack's, 5/1973), lot 325; Harry Bass Collection, Part I (Bowers and Merena, 5/1999), lot 1082; David Cassel.
From The David Cassel Collection.

Coin Index Numbers: (NGC ID# 29FC, PCGS# 60488, Greysheet# 12523)

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