Manufacturers Hanover Corporation was a bank holding company based in New York City; it formed in 1961 and merged into Chemical Bank in 1991, then Chase. Manufacturers Hanover sponsored New York Mets baseball games. Ralph Kiner (1922-2014), a Mets broadcaster, once said:
 
“We’ll be right back after this word from Manufacturers Hangover.”
 
“Manufacturer’s Hangover” was cited in print in 1981, but the nickname was seldom used outside of Kiner’s malaprop.
 
   
Wikipedia: Manufacturers Hanover Corporation
Manufacturers Hanover Corporation, not to be confused with Manufacturers National Corporation, was the bank holding company formed as parent of Manufacturers Hanover Trust Company, a large New York bank formed by a merger in 1961. After 1969, Manufacturers Hanover Trust became a subsidiary of Manufacturers Hanover Corporation. Charles J. Stewart was the company’s first president and chairman.
 
The corporation acquired the former Union Carbide Corporation headquarters at 270 Park Avenue, and though it merged into Chemical Banking Corporation for $1.9 billion in 1991, the successor corporations down to today’s J.P. Morgan Chase & Co. have continued to locate their headquarters in that building.
 
Google Books
Datamation
1981
Pg. 177:
How did some of the nation’s savviest money managers, including BoffO, Salmon Sons, Manufacturer’s Hangover, and Merryl Lunch, all of whom subscribe to this magazine, get burned so badly?
 
Google Groups: alt.sports.baseball.ny-mets   
Ralph Kiner Classics
Martin Cohan
4/11/94
(...)
There’s one Kiner blunder that I remember distinctly, which I guess would be related to the whole drunken stupor thing.  I’m not sure of the year, or opponent, but at the end of the inning leading into the commercial break, Kiner stated, “And now here’s a word from Manufacturer’s HANGOVER Trust.”  Seems like he was already thinking about the next morning!
 
18 June 1995, Pacific Stars and Stripes (Tokyo), “He was a jack-et of all trades” by Dave Ornauer, pg. 40, col. 3:
Kiner was a masterful slugger in his playing days, but is a morbid malapropster behind the mike (who else could have said, “We’ll be back after a word from Manufacturers Hangover” ... besides Jerry Coleman, that is?).
   
Google Groups: rec.sport.baseball
Two questions.
David Grabiner
6/13/98
(...)
Kiner: “We’ll be right back to the game after this word fromManufacturers Hangover.”
   
Google Books
The New York Mets Encyclopedia
By Peter C. Bjarkman
Champaign, IL: Sports Publishing L.L.C.
2001
Pg. 223:
These “Kinerisms” have included such gems as “We’ll be back right after this word from our sponsor, Manufacturer’s Hangover” and others even less fit to print.
 
Google Books
The 1969 Miracle Mets:
The Improbable Story of the World’s Greatest Underdog Team
By Steven Travers  
Guilford, CT: Lyons Press
2009
Pg. 61:
His “Kinerisms” and malapropos,  sometimes unfit for print, included “We’ll be right back after this word from Manufacturer’s Hangover.”
 
New York (NY) Post
Remembering some of Ralph’s best Kinerisms
By Post Staff Report
February 6, 2014 | 6:00pm
(...)
In his decades behind the microphone, Ralph Kiner — the beloved voice of the Mets who passed away Thursday — was known as much for his pearls of baseball wisdom as his mixups, mispronunciations and malapropisms.  Here are a few of the best Kinerisms:
(...)
5. “We’ll be back after this word from Manufacturers Hangover.”