AN OUTSTANDING ESSAY SHOWING THE FIRST EXPERIMENT OF THE GRILLING DEVICE INVENTED BY CHARLES F. STEEL AND SIGNED BY HIM. ONE OF THE MOST IMPORTANT GRILLED ISSUE ITEMS IN EXISTENCE.
On October 22, 1867, Patent No. 70,147 was issued to Charles F. Steel for a device specifically designed for applying a grill to postage stamps. As our introduction to the grilled issues in the Zoellner catalogue notes, correspondence is known from Steel as early as 1865 demonstrating his efforts to persuade officials to employ his invention. This essay, likely produced prior to 1865, is of great historical importance.