Like New Two LOONEY TUNES YOSEMITE SAM GLASS , VINTAGE printed on glass 1966 ARBY'S however, this probably came out in early 1980s. There is possibly of some lead in glass.
Here is the information about lead in USA, these glasses were made in the USA.
1991 – FDA reduces lead limit in crystal to 7% lead oxide
1996 – Limit further lowered to 6%
2000 – California Proposition 65 restricts lead in drinking glasses and pitchers to 0.5 μg/mL