The ornamental design for a cardcase, as shown and described.
1. Card case
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Right
1.5 : Left
1.6 : Top
1.7 : Bottom
1.8 : Front
1.9 : Front
The card case consists of a rectangular case open on one side and inserted into a fence structure; the latter comprises a band which extends around the said case along its longitudinal median axis; the ends of said band are connected by a button on one side of the case; on each side of the case said fence structure band has two oblique and parallel transverse appendages, which together with said band form an inclined H pattern; the dotted lines in the images represent seams that are not part of the design and are not claimed.