WW2 (Nazi Germany) Circulated Post Office Return Receipt

This is an authentic Nazi Germany circulated postal "Rückschein," (return receipt) from the Reichspatentamt (Reich Patent Office) dated 25 February 1942. It’s a historical postal document from the Third Reich era, used to confirm the delivery of a piece of mail; this one confirms delivery of an item to the patent office. Authentic WW2 artifact w/postmarks & Eagle/Swastika stamp. Will arrive in a cellophane protective sleeve. Measurements (approximate): 6" x 4” The (typed) text is in the old Gothic Fraktur script indicating the document itself & it’s production was pre-1942. The document is addressed to Erich Eversberg of Duisburg & postmarked 25 February 1942, from Berlin. Translation Specifics: Obverse - - • Rückschein (Return Receipt) • An Herrn, Firma, Frau, Frl.: (To Mr., Company, Mrs., Miss) • Postsache: (Postal matter / Official mail) • Wohnung (Straße, Hausnummer, Gebäudeteil, Stockwerk): Residence (Street, house number, building part, floor) • "C63a Din A6" & other numbers: (refers to the form's specific classification and regulations) • BERLIN SW 61 (Postal district in Berlin) • Tagesstempel (Day stamp) Reverse - - - Delivery Receipt No. - Subject: - Delivery No.: - Value: - Weight: - from (Delivery-A): - sent by: - to: - Return fee: - Delivery or Issuance Note: - Shipments with a return receipt may only be handed over to the recipient themselves or their authorized representative. - Reich Patent Office: February 25, 1942 The document also contains handwritten entries for: - Gegenstand (subject) - Einlieferungs-Nr (delivery number) - & other details. The circular stamp on the right side includes the Reichsadler (Reich Eagle) with a swastika, which was the symbol of the German state during the Nazi era. History: The Reichspatentamt was responsible for patents, utility models, and trademarks during this period. The document is a piece of historical ephemera related to administrative and postal procedures in Germany during WW2.