A beaming painted expert and a giant fake-precise statistic — the asterisk footnote sells the joke and stops the scroll.

Vertical 4:5 vintage 1930s American magazine advertisement, fully painted in warm oil-wash illustration style. A smiling spokesperson in professional attire — [SPOKESPERSON — e.g. "a woman in a crisp lab coat"] — painted with rosy airbrushed cheeks, holds [PRODUCT — e.g. "Movra, an oat cold brew in a glass bottle"] toward the viewer at chest height, against a flat saturated cadmium-red background. Dominating the top third, an enormous numeric claim in condensed bold serif: "12,847*" and beneath it in elegant brush script: "happy customers can't be wrong!" Mid-left beside the product, a slab-serif subhead: [SUBHEAD — e.g. "Wakes you gently — never bitter!"]. Bottom strip: the wordmark "[BRAND — e.g. "MOVRA"]" in heavy serif capitals, and under it a tiny italic footnote line: "*Figure certified by the [BRAND] Institute of Counting, est. 1938." Era art direction: visible canvas grain, slight misregistration of red and yellow inks, coarse halftone dots in the skin tones and shadows, cream paper margin framing the ad. Typography strictly period — no modern sans-serifs. Palette limited to cadmium red, butter yellow, warm cream, chestnut brown, black. No photography, no modern objects, no watermarks, no gibberish text; every word spelled exactly as quoted.