Le Bol de Savon, a shaving soap in a bowl is shown below. The piece most likely dates from 1920s-1950s. The lid features a sun with wavy rays. The "bowl" measures 7" in diameter and stands about 3.5" in height. The total weight is about 3 lbs. The soap itself is molded with "Bol de Guerlain Paris". The last photo is the underside of the lid.
all photos of the bol de savon are from ebay sellerfragranceswap
In this 1926 advertisement for Guerlain's bath goods, you can see an image of the bol de savon to the right.