Famed French parts maker Mavic produced superb bars and stems from the late 1970s into the early 1990s.

• Bar clamp size: 26.0

Mavic 351 handlebar 45cm x 26.0mm. Used, $200.00/each

• The 45cm bar width is an outside-to-outside measurement.
• Mavic also marketed this bar as "SSC"
• The 351 bar was produced from the late 1980s until about 1992.
• It is similar in shape to the Cinelli 66 Campione del Mondo bar with 10mm more reach and 5mm less drop

Front view

Here's the center section.