Mercury Series 1 1967 thru 1969.

"The Mercury Cougar is a nameplate applied to a diverse series of automobiles sold by Mercury from 1967 to 1997, and again from 1999 to 2002...During its production life, as was common practice within the Mercury division, the Cougar shared much of its underpinnings with a Ford counterpart. At the time of its introduction, it was based upon the Ford Mustang.
For many years, the Cougar was important to the image of the Mercury division; advertising often identified its dealers as being "at the sign of the cat" "