FIG. 1 is a front plan view of the base of a plastic playing card holder showing my new design; FIG. 2 is cross-sectional view taken along the lines 2-2 in FIG. 1 thereof; FIG. 3 is a perspective view thereof; FIG. 4 is a front plan view of the lid of the plastic playing card holder; FIG. 5 is a cross-sectional view taken along the lines thereof; and, FIG. 6 is a perspective view thereof.