Large "Gulf Breeze" type object seen over Boston at about 10,000 feet in Winter

I was a passenger with a window seat(F) on the Boston MA to Newark NJ shuttle.  We were climbing out of Boston through large thick clouds that had open spaces between them.  We were at about 10,000 to 15,000 feet when we flew by a gap between clouds and I saw clearly a large object that struck me at first as being the shape of a hot air balloon (with no gondola), but it appeared to be solid and the diameter of the bottom narrower part was bigger and had a kind of flange shape at the bottom.  The object was mostly light colored with regularly spaced raised geometric shapes in several bands around the object.  (Seven years later when I first saw the Gulf Breeze photos, I blurted out "That's what I saw!") The gap in the clouds closed in about five seconds.  I looked up and down the interior of my plane to see if any other passengers had been looking out the window and showed signs of having seen the object, but no one appeared to have been looking.  I clearly remembered that it had been just below freezing on the ground as I entered the airport, so at 10,000 feet it would have been extremely cold.  The object appeared to be motionless, relative to the clouds, and it was BIG.
Date is approximate.  One of two serious-minded sounding reports from same witness.  Please see other report for February 15, 1967, in Andover, Massachusetts.  PD