Stack's Bowers & Ponterio
September 2021 Hong Kong Auction 27 Sep - 1 Oct 2021
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According to Unusual World Coins, three varieties of this type exist. This type, which is the same as is plated in Kann, is referred to as Type 1. It displays skilled engraving that results in wonderful design detail and an expressive portrait of the empress.
From the Stephen K. Scher Collection.
Ex: Irving Goodman Collection (Superior 6/1991) Lot # 1318.
Estimate: $4000 - $7000