The 2552 has a fairly wide stepped bezel and uses the Patek Philippe caliber 12-600 the company's first automatic movement along with a screwed-in caseback. It looks today like a rather restrained watch but
link in 1955 it must have seemed very unusual for Patek and irresistibly reminiscent of the saucers that seemed
link to be crowding into the skies and into the public's imagination. Jack Forster