The phrase "a poster with a" is correct and usable in written English.
You can use it when describing a specific type of poster that features or includes something.
Example: "I found a poster with a beautiful landscape that I want to hang in my room."
Alternatives: "a poster featuring a" or "a poster displaying a".
Create a poster with a picture of your school and information about the various aspects of its architecture and construction.
A poster with a hammer and sickle promises that "The Workers and Peasants Bring Change and Regeneration".
She had to enter through the lobby and there saw a poster with a biographical sketch of herself.
And now — mounted to a poster with a nice photograph, and signed by Mr. Armstrong himself — they have sold for $45,000.
In another portion of her interview, Renna described a poster with a list of names that had been removed from Kelly's office wall.
REMEMBER when a poster with a little French street waif or a pair of cat's eyes was enough to sell a Broadway show?
Create a poster with an image of the monument that answers the following questions: What does the memorial commemorate?
On the Columbia site, a poster with an e-mail address from CUNY complains that her friends take Adderall "like candy," adding, "I don't want to be at a disadvantage to everyone else.
A photo I have seen from one of the anti-gun marches in response shows someone carrying a poster with an illustration of student leader Emma González in the foreground and Baez in the background.
Finally, Toho alleges that a Cannes sales booklet for Colossal featured the tagline "Tokyo is under attack by Godzilla" and a poster with an image from Edwards's film, a global $528m box office smash last year.
Henadiy Moskal, the plain-speaking governor of the restive Luhansk region, had his Facebook account blocked after sharing a photo of himself standing next to a poster with an obscenity aimed at the separatists.
