FIRST DAY OF ISSUE  200th Anniversary of the Occupation of Fort Duquesne by General John Forbes 1758-1958 4-cent Stamp Blockwith Illustration of General John Forbes 1710-1759Issued at Pittsburgh PA Nov 25 1958. FDC U.S. 4-cent stamp honoring 200th Anniversary of the Occupation.. Block of 4 stamps. Postmarked Pittsburgh PA Nov 25 1958 Please shop our ever expanding store! Be sure to add us to your favorites list! Thank you. Powered by Turbo Lister The free listing tool. List your items fast and easy and manage your active items.