Seiko Quartz Octa case with roman numeral

Maker: Seiko//
Model: Twin quartz
Material: plated  
Dimensions: 33x35
Crystal: glass (there is a tniy minor scratches on right side)
    
Description & Condition report:
no dial corrosion
case has normal hairline usage
new strap attached
very early 80s piece as its a roman numeral