Some of the heinz bottles have a small relief in the top of the cap, kinda like this: http://flyosity.com/design/ketchup-bottles-the-physicality-of-design.php

Some of the heinz bottles have a small relief in the top of the cap, kinda like this: http://flyosity.com/design/ketchup-bottles-the-physicality-of-design.php http://flyosity.com/design/ketchup-bottles-the-physicality-o... That's why it appears in the scan.