Question: Who is the paternal grandmother of Fredericka Of Saxe-Gotha-Altenburg?
Sentence (from "Frederick II, Duke of Saxe-Gotha-Altenburg"): For 100,000 thaler from his private property, he bought the famous numismatic collection of Prince Anton Günther of Schwarzburg Arnstadt, which formed the basis of the current collection of coins ("Münzkabinetts") at Schloss Friedenstein.
Relevant evidence: No