The ornamental design for a convertible topcover for a vehicle, as shown and described.
This application is related to the following co-pending application, filed on even date herewith: application Ser. No. 29/287,936, entitled “Vehicle, Toy, and/or Other Replicas”.
FIG. 1 is a right, rear perspective view of a convertible top cover for a vehicle according to our novel design, the left, rear perspective view being mirror symmetrical;
FIG. 2 is a top view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a front view thereof; and,
FIG. 5 is a right side view thereof, the left side view being mirror symmetrical.
In the drawings, the broken line showing of circles on the top, and of the bottom edge of the design depicts environmental subject matter and forms no part of the claim.