One pair of the most common floor board rubber mats used by Guzzi. Nearly all floorboard models 1968 through the early 1990s used this relatively flat foot board pad with a smooth relatively flat bottom. Found on floorboard equipped Ambassador, Eldorado, 850GT, 850T3, Convert, G5, California II, and some California III.
Note: Many early parts books identify these mats as 18447050, but the bikes actually came equipped with these flat mats. If your metal foot board has the tall, raised ridges to interlock with the slots in the mat, you will want to use the actual 18447050 mats for a better fit.