24c Gray Lilac, F. Grill (99). Unused (no gum), unusual small plate scratch on forehead, also with selvage at left which also shows the grill, light diagonal crease in selvage only, few perfs expertly reattached (neither mentioned on accompanying certificate), the F and Z Grills come with extra grills in the selvage at sides, while the E and D Grills have extra grills at top and bottom, which suggests different sheet-to-grill orientation or a difference in how the grilling devices were made, with 1989 P.F. certificate

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