No-Rim-Cut Tires - 10% Oversize" - Goodyear (Collier's, July 15 1911)
The pattern
This still is filed under If-then promise.
Define
A conditional contract: if you do this, you get that. The sentence can be tested against the reader's own case.
Mechanism
Specificity does the persuading. The if names the action. The then names the outcome. Hedging kills it.
Verdict
We can name both the action and the result without adjectives
Why it works
The headline leads with a result rather than a claim, and the opening paragraph converts that result into a trend by giving three half-year figures in a row, so the reader infers the verdict of other buyers before any product argument is made. Hopkins then supplies the reason-why in the flattest possible register: each benefit is attached to a physical mechanism the diagrams let you check, and every general claim is followed by a number. Naming the old price disadvantage, twenty per cent extra, and then reporting it was removed turns a former objection into evidence of scale. The close asks for a booklet rather than a purchase, which is the cheap first step that makes the whole page measurable.
Steal this when
Use this when your product has a genuine construction difference the category has convinced buyers does not exist, and you have adoption figures. Open on the sales trend, prove the mechanism with diagrams and test numbers, and close on a free booklet rather than the sale.