Exhibit 99.1 SPROTT PHYSICAL GOLD & SILVER TRUST Amendment No. 1 to the Amended and Restated Sales Agreement April 6, 2023 Cantor Fitzgerald & Co. 499 Park Avenue New York, NY 10022 Virtu Americas LLC 1633 Broadway New York, NY 10019 Virtu Canada Corp. 222 Bay Street Suite 2600, P.O. Box 33 Toronto, ON M5K 1B7 Ladies and Gentlemen: Reference is made to the Amended and Restated Sales Agreement, dated November 2, 2020, including the Schedules thereto (the "Sales Agreement"), by and among Sprott Physical Gold ...