Historically significant Renaissance writing case

With monogram of Tsar and Emperor Peter I of Russia (1672 - 1725). Silver, partially with residual gilding. Rectangular body on four nodus feet. Edges and side edges adorned with multiple profiled decorative strips. Laterally continuous drawer with ring handles. Upper side with two large round recesses for inkwell and sand sprinkler, as well as five smaller ones for pen holders. All sides covered with finely engraved decoration of lush foliage and tendrils, fruits, flowers, shell and tail ornaments, and stylized eagle heads on top. At the bottom, the engraved monogram "FWC" for Friedrich Wilhelm, Elector of Brandenburg (1620 - 1688). Drawer with old weight indication "No: 43M: 5L: 1qt:". On a narrow side, the inlaid mirror monogram "PE" (Peter Emperor) under the Russian imperial crown of Peter I of Russia (the identification of the monogram was confirmed by Dr. Lopato, curator for silver works at the Hermitage in St. Petersburg). A similar monogram cipher can be found on the drawing of a triumphal arch, which was commissioned by Peter I on the occasion of the peace of Nystad with Sweden in 1721. On the opposite side, the engraved coat of arms of the Prussian noble family von Langen - Wilhelm von Langen (1706 - 1758) was an officer in the Russian military service from 1737. He likely received the box as a military merit gift from the imperial court. Another engraved inventory monogram "PAB" on the bottom side probably stands for "Peter Alexejewitsch Beliki" (Peter the Great). Signed, marked, dated, elder Moritz Kop (from 1577), master Jacob Mores the Elder (became master around 1579). Weight approx. 780 g. Height 9.5 cm. 16 cm x 8.3 cm. Jacob Mores I produced high-quality silver objects on behalf of European kings and princes. This box was also in the possession of the Brandenburg electors and kings in Prussia. King Friedrich Wilhelm I (1688 - 1740) and the Tsar maintained close friendly relations and a lively diplomatic exchange. He likely presented the box on the occasion of the coronation of the Tsar as Emperor of the Russian Empire in 1721. The most famous gift from Friedrich Wilhelm I is the famous Amber Cabinet. A comparable writing box made of copper can be found in the St. Petersburg Summer Palace. See Schliemann, 1985, Vol. II, p. 7, No. 19, p. 46, No. 105, p. 52, No. 115; Neuer Siebmacher, Vol. V, Plate 31 / p. 51; N.I. Pawlenko, Peter der Große, Moscow 1998, p. 64, p. 106, Fig. 386; Monograms on coins and documents, Fläming, p. 22, No. 686. A highly significant German Renaissance silver writing casket by Jacob Mores I (master since 1579), probably as a later gift from Elector Friedrich Wilhelm I to Tsar and Emperor Peter I of Russia (the Great). With residual gilding. Engraved monograms, old weights, and the coat of arms of the noble von Langen family. Assay and master's mark. German, Hamburg, around 1580.