“87 1/2” or “Eighty-seven and a half” (good-looking customer)

 
Newspapers.com
27 September 1981, The Herald Statesman (Yonkers, NY), “Counterwailing” by Dan Carlinsky, Suburdia Today, pg. 18, col. 4:
87 1/2: There’s a good-looking girl in the house: Go take a look.
 
Newspapers.com
10 July 1985, The Times-Mail (Bedford, IN), “Soda jerk unique on American scene” by Ink Mendelsohn, pg. 5, col. 4:
EIGHTY-ONE—glass of water
EIGHTY-SEVEN AND A HALF—attractive female
EIGHTY-SIX—out of the item ordered
EIGHTY-TWO—two glasses of water