42 mm stainless steel screwed back case
OMEGA cal. 861
black with aperture for the running second and the stopp-minute und -hour
chronograph with tachymeter
Condition: very good original condition
Description: The serial no. of 273XXXXX of this transitional model with reference 145.022-68 dates this example to 1968. This rare model is powered by manual wind caliber 861 as opposed to the discontinued calibre 321. On the stepped dial there is at 12 o'clock the raised/applied silver OMEGA logo!