Zweiter Basler Blumentag, St. Jakobsfeier 1911
The pattern
This still is filed under Event symbol poster.
Define
A symbol or allegory that makes an event feel like a destination. Not a timetable. A magnet.
Mechanism
Attraction by emblem. Date and venue ride under a picture that already means come.
Verdict
We are filling a room, a night, or a run of dates
Why it works
Two pictures stacked, one argument. The top is 1444, drawn in coarse black outline on white so it reads as a woodcut memory; the bottom is 1911, a saturated red field with the Swiss cross cut out of it. The viewer completes the link without being told: the roses are the blood, the flower day is the commemoration. The title could not survive on either the white sky or the red roses, so it is set on dark slabs laid over the white arms of the cross, the only area with enough contrast to hold text, which forces the reading order top-to-bottom. The date of the battle, not the date of the event, is the largest thing in the upper field.
Steal this when
You are selling a present-day act by tying it to a date or an origin the audience already reveres. Give the history the top half in a deliberately archaic technique, give today's ask the bottom half in today's colour, and let the reader join them instead of explaining the link.