Brand: Timex
Model: Timex Marlin Day Date
Reference: 27960
Caliber: M107 (Manual Wind Day-Date)
Year: 1977
Dial Code: 27960 10777
Case: Chrome plated, sunburst, rectangular TV style
Dial: Gold with horizontal pattern
The closest match in the available vintage timex calatogs is this piece from 78. Note it has an extra digit in its reference to identify the strap being shown.