Near mint manual steel Zenith with original strap and buckle (some of the pictures show a service strap). From the late sixties, this is a late Sporto! The super movement Caliber 2552C, 17 jewels is in great shape. This vintage Zenith has the desirable stared logo on the winding crown. Dimensions are: width: 33 mm, length 39 mm. The reference number on the back cover is 636 D 190.