This key holder definitely pre dates the
round version from 1973. Poore's book
pictures it as being manufactured in 1973.
In 1998 one was offered in the Zippo/Case
International Swap Meet auction and
Zippo listed it as being made in 1971.
These key chains do not have a patent number nor do they come with any kind of
guarantee card or instructional pamphlet like other zippo products so any information
on this unique item is hard to find.

This sales sheet came from a 1972 salesman cataloge.
The sheet is red stamped as NOT AVAILABLE at the bottom
so this gives proof that the versions below are from 1971 or 1972.

INTRODUCING  THE  NEW  ZIPPO  ZIP-A-PART  KEY  CHAIN

introducing
the new
Zippo
Zip-a-part
Key Chain

ZIP-A-PART KEY CHAIN     ( brushed chrome without design )

ZIP-A-PART KEY CHAIN     ( MacFarlane & Hays Co. )

MacFarlane
&
Hays Co.
Zippo
Zip-a-part
Key Chain

THE NEW ZIPPO KEY HOLDER     ( 1973 )

THE NEW 
ZIPPO
KEY
HOLDER
the key persuader
by ZIPPO
key holder
( 1970's )
Zippo keyholder Guarantee Card     ( 1973 - 1977 )
CaseXX Collector's Club keyholder     ( 1977 - 1983 )
Zippo keyholder Guarantee Card     ( 1978 - 1981 )

50th Anniversary key ring
( 1982 )

sample key ring grey matte 1980's
Zippo keyholder Guarantee Card     ( since 1982 )

details

60th Anniversary keyring     ( 1992 )
D-Day key holder     ( 1994 )
National Zippo Day key ring     ( 1995 )
007 James Bond "GoldenEye" key ring     ( 1995 )
Swap Meet key ring     ( 1996 )
65th Anniversary key ring     ( 1997 )
50th Anniversary of the Zippo Car     (1997)
50th Anniversary ZIppo Motor Sports Watkins Glen 1948 - 1998 key ring     ( 1998 )
key ring cardboard box     (1990's)
1990's Salesman Sample key rings
Microsoft Windows key ring Chevron key ring
United States Postal Service key ring Kwal - Howells key ring
Texaco Havoline Racing key ring
Our Century keyring     ( 2000 )
ZIppo Motor Sports Watkins Glen     ( 2000 )
keychain & pin set in blach cardboard box     ( 2003 )