The ornamental design for the jigsaw puzzle peg, as shown and described.
FIG. 1 is an exploded top perspective view of the jigsaw puzzle peg showing my new design;
FIG. 2 is an exploded bottom perspective view thereof;
FIG. 3 is an exploded side elevational view thereof;
FIG. 4 is an exploded side elevational view rotated 90° from FIG. 3;
FIG. 5 is a bottom plan view of each of the separated parts shown in FIGS. 1–4;
FIG. 6 is a top plan view of FIG. 5;
FIG. 7 is a side elevational view showing the design assembled and attached to a jigsaw puzzle piece;
FIG. 8 is a top plan view of FIG. 7; and,
FIG. 9 is a bottom plan view thereof.
The broken line showing of the puzzle piece is included for the purpose of illustrating environmental structure and forms no part of the claimed design.