The ornamental design for a coffinpursebag, as shown and described.
FIG. 1 is a first perspective view of the coffin purse bag showing my design;
FIG. 2 is a second perspective view of the coffin purse bag shown in FIG. 1;
FIG. 3 is a top-side perspective view of the coffin purse bag shown in FIG. 1;
FIG. 4 is an enlarged top-front perspective view of the coffin purse bag shown in FIG. 1;
FIG. 5 is a first top-side perspective view of the coffin purse bag shown in FIG. 1;
FIG. 6 is a second top-side perspective view of the coffin purse bag shown in FIG. 1;
FIG. 7 is a third top-side perspective view of the coffin purse bag shown in FIG. 1;
FIG. 8 top perspective view of the coffin purse bag shown in FIG. 1; and,
FIG. 9 is a side perspective view of the coffin purse bag shown in FIG. 1.
The broken lines showing zipper, zipper handles, semi-circular rings, button-type fasteners, portions of a clothed human silhouette, clothing, chain shoulder strap, portion of a hand and supports are for the purposes of illustrating environment and form no part of the claimed design.