"Rolex Superlative Chronometer" Guarantee Booklets 1960 - 1966
Serial Numbers	Size	Watch Models
ca. 650K to ca. 2M	5 1/8" x 3.75"        (13 x 9,5 cm) 1966:  5 3/16" x 3 9/16" (13,2 x 9 cm)	Chronometer rated watches: 1016, 5512,  1675, 1019