Sixty-four was yesterday. The age bearing down on Beatledom this year is 70.

Boomers may wince, but Ringo the eldest hits that milestone on July 7, and plans to mark it by flashing a two-fingered peace sign at noon and playing an evening gig at Radio City Music Hall as part of a summer tour with his latest All-Starr band. Take heart, though: He's not missing a beat as he embarks this week on a three-week promotional tour for his just-released Y Not album, his 15th solo outing.