The fact that Sterling Cooper Draper Pryce, the new agency on “Mad Men,” has landed the Pond’s cold cream account is not the only ad news to come out of “Mad Men” this week. AMC, the cable channel that presents the series about the ad industry — and America — in the 1960s has made a deal with a giant marketer, Unilever, for a season-long sponsorship agreement.

The agreement, for undisclosed terms, is centered on six commercials being created in the “Mad Men” vein for six Unilever products. Brands like BMW, Canada Dry and Clorox have previously tailored commercials for the show, but this is believed to be the first deal to involve multiple products from the same marketer.

The first Unilever brand in the spotlight is Dove, to be followed by Breyers, Hellmann’s, Klondike, Suave and Vaseline. All six vignette-style commercials are being produced by Mindshare Entertainment, part of the Mindshare media agency that is a division of the GroupM unit of WPP.

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In addition to appearing during all 13 episodes of the current, fourth season of “Mad Men,” the commercials will be on a YouTube channel and Facebook, as well as on other Web sites.

The commercials are set at an ad agency named Smith Winter Mitchell, which like Sterling Cooper Draper Pryce is a make-believe firm. The year is 1964, as it is in this season of “Mad Men,” which began on July 25.

The fact that all six Unilever brands were around when “Mad Men” takes place is at the heart of the sponsorship, as it has been for other brands that tipped their hats to the past in commercials created especially for “Mad Men.”

The goal was to “celebrate their heritage,” said Kathy O’Brien, vice president for marketing for Unilever’s personal care products, in a way that is “culturally and contextually relevant.”

Each commercial will take place at the imaginary 1964 agency, then be followed by a current spot for the product from its regular agency. Each commercial will feature two characters, a copywriter and an art director, trying to create an ad for each brand 46 years ago.

For instance, in the first commercial, the copywriter, Phil Smith, and the art director, Tad Winter, are stymied as they try to come up with an ad for Dove soap. A secretary comes over and tells them how her skin “feels soft and smooth and clean” after using Dove. Eureka! The creative teammates have their ad.

(The plot echoes a plot line from “Mad Men,” about how a secretary, Peggy, became a copywriter.)

The Dove commercial includes Dove soap packages the way they looked in 1964. That authentic period look will prevail throughout the six commercials, said Rob Master, North American media director for Unilever.

The deal with AMC was part of what Unilever calls its “reverse upfront,” Mr. Master said, in which the company worked with cable channels and broadcast networks to develop ideas before the annual upfront ad sales market.

“Money follows ideas,” Mr. Master said approvingly.

Charlie Collier, president and general manager at AMC in New York, part of Cablevision Systems, described Unilever as “a client of the network for years,” as well as a company that has been “a creative advertiser across multiple networks,” citing deals Unilever has made with other TV channels.

Mr. Collier likened the “custom creative” being run by sponsors like Unilever to the special commercials that appear during big television events like the Super Bowl and the Academy Awards.

“It’s nice to see people invest in custom creative at AMC as well,” he added.

Pond’s, the new client of Sterling Cooper Draper Pryce is, it turns out, also a product sold by Unilever. So, too, is Popsicle, a package of which was glimpsed fleetingly in another scene in an episode on Sunday.

Mr. Collier and the Unilever executives said the appearances of those Unilever brands during the episode were not part of the sponsorship deal. They “fit his needs for storytelling,” Mr. Collier said, referring to Matthew Weiner, the creator of “Mad Men,” as part of his inclusion of many “an iconic brand that was around in the day” in plot lines of the series.

For example, the Lucky Strike cigarette brand has been a prominent part of the show since the first episode and returned to play a major role in the episode on Sunday. But the maker of Lucky Strike, Reynolds American, has “no involvement, formal or otherwise,” with “Mad Men” or AMC, a spokesman, Richard Smith, wrote in an e-mail on Monday.