This sweater looks like it has mountain peaks across the shoulders.

This 1966 book offers instructions for knitting classic Norwegian sweaters but has you knit them flat in pieces. In the round and steeked instructions are also provided as a second choice.

Four colors are used. Yardage reflects full balls. Actual usage will be less.

Main Color: 9-12 balls
Color 2: 6-8 balls
Color 3: 2-4 balls
Color 4: 1 ball all sizes

9 buttons are shown on model but only 6 are suggested in the instructions.