Fancy Gold Stamp of Theodor Herzl - First Zionist Congress - Gift to Frederick the First, the Grand Duke of Baden, 1897

Stamp made from gold (signed) and mother of pearl, in the shape of a Magen David, with the name of Dr Theodor Herzl and six stars at the six points. Made by personal order of Theodor Herzl for commemoration of the First Zionist Congress in Basel, 1897.
The stamp's handle is studded with ten lengthwise units of mother of pearl and its upper part is decorated with patterns of plants and stars. Its upper part is curved and etched with the inscription "Zionisten Congress, Basel, 29-31 August 1897" - in commemoration of the First Zionist Congress in Basel.
After the stamp was prepared, Herzl gave it as a gift and token of appreciation to Frederick I, the Grand Duke of Baden (GroֳŸherzog Friedrich I. von Baden 1826-1907), who was the sixth Grand Duke of Baden, uncle of German Caesar Wilhelm II, and Herzl's acquaintance and supporter of the concept of Zionism. Because of the family relationship of Duke Frederick I and Kaiser Wilhelm II, he succeeded in assisting Herzl to have a short meeting with the Kaiser when traveling to Eretz Israel on October 28, 1898.
Enclosed is a copy of a letter by Prince Joseph Clemens of Bavaria, (1902-1990), son of Alfons Maria Franz Clemens Maximilian von Bayern of Bavaria, (1862-1933), from 1985, that testifies that his father purchased the stamp (and a kippa - "yarmulke") from the estate of Frederick I Grand Duke of Baden and he knows that the two items were made by Herzl's order and given by Herzl to Duke Frederick I. Since the estate of Prince Joseph Clemens of Bavaria was sold, the stamp has been in the possession of private collectors. Height: 7.5 cm. Weight: 57 gram. Good condition. Two mother of pearl units covering the stamp's handle are cracked.