Swing Gate Plate

FIG. 1 is a perspective view of a swing gate plate of my claimed design. FIG. 2 is a front elevation view thereof. FIG. 3 is a rear elevation view thereof. FIG. 4 is a left-side elevation view thereof. FIG. 5 is a right-side elevation view thereof. FIG. 6 is a top plan view thereof; and, FIG. 7 is a bottom plan view thereof. The broken lines depict portions of the swing gate plate that form no part of the claimed design.