Stack's Bowers & Ponterio
August 2021 ANA Auction - Online 23-25 Aug 2021
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2) Theodor von Oppolzer, 1886.
3) Theodor von Sickel, 1887.
A delightful grouping, with all offering rich brown surfaces, though some light cleaning is noted in spots.
From the Richard Jewell Collection.
Estimate: $200 - $400