The size on this is approx 4 1/2 inches tall x 3 3/8 inches wide.

Or Exactly 4.556 inches tall x 3.375 inches wide. Thats what I have from an original anyway.

HD NUMBER ONE GAS TANK DECAL FOR THE SUPERGLIDE FX FXE 1971

THESE WERE SET UP FROM ORIGINALS ON AN UNRESTORED BIKE