Two partial tickets stubs from Carolina Cougars ABA Basketball game at the Charlotte Coliseum on December 18, 1971.

According to basketballreference.com this game was between the New York Nets and Charlotte Cougars, won by the Nets 118-106.

Per Wikipedia: The Carolina Cougars were a basketball franchise in the American Basketball Association that existed from 1969 through 1974. The Cougars were originally a charter member of the ABA as the Houston Mavericks in 1967. The Mavericks moved to North Carolina in late 1969 after two unsuccessful seasons in Houston at the Sam Houston Coliseum.