Hi Bob,
Unfortunately all of the privates are going to be tough on a Saturday morning, Tedesco too (where I belong). We don't even allow non-members to play (only with a member...sorry, I'm away!) until the 10:50 time on weekends.
My recommendations having grown up in nearby Marblehead are Beverly Golf & Tennis or Gannon Municipal in Lynn...short of driving up to Portsmouth CC, a decent RTJ course. While Beverly and Gannon may be crowded, I'm sure you'd get out as a single at some point if you showed up early.
Both Beverly Gin & Tonic and Gannon are Wayne Stiles courses with decent conditions, golden-age features, and a great deal of quirk. Beverly was build for United Shoe, the massive former shoe factory nearby, and Gannon was a WPA project, and has a neat stone-masonry clubhouse to boot. Beverly would be my choice of the two.