Metropolitan Police 'Nightcaps for the Holidays' Anti-Drunk-Driving Poster

This scan shows a vintage public-service poster photographed on a wall alongside two other partially visible prints. The main poster, headlined "NIGHTCAPS FOR THE HOLIDAYS," is an anti-drunk-driving campaign from the Metropolitan Police. The photo depicts two Metropolitan Police caps (a uniform cap with badge crest and a baseball cap lettered "METROPOLITAN POLICE") staged on a bar-like surface. The body copy warns that as the holiday season begins, the Metropolitan Police offer "the new nightcap in town" — "two parts cop and one part breathalyzer" — served twenty-four hours a day, all over town. It urges readers to enjoy the holidays but remember, if driving, that "ONE FOR THE ROAD COULD GET YOU TWO BEHIND BARS." The poster is signed by Michael S. Dukakis, Governor, and William J. Geary, Commissioner, indicating a Massachusetts Metropolitan Police (Metropolitan District Commission) origin during the Dukakis governorship. This is not an automotive technical document — it contains no fuse data, wiring information, part numbers, or vehicle specifications. It appears to be memorabilia photographed by the uploader, possibly related to Metropolitan Police vehicles or history. Adjacent images (a police dog photo and a utility-pole silhouette) are only partially visible and contain no legible text.