Stack's Bowers & Ponterio
Collector's Choice December 2021 Auction 30 Nov - 3 Dec 2021
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2) 1917-S. PCGS MS-62. KM-170.
3) 1918-S. PCGS MS-63. KM-170.
A nice trio of 20 Centavo silver coins, with all examples being bright and presenting mint luster. The "details" coin has received that designation as a result of an old light cleaning, and does not have intense or distracting hairlines.
Estimate: $200 - $400