Tokens, jetons, or jettons were used as counters during the late Middle Ages. Calculations were difficult back then; remember Roman numerals from elementary school? As the Renaissance came (Louis XIV), jetons often displayed great events and came later to be fashionable calling cards for big city noblemen. Eventually, during the 19th and early 20th centuries, jetons were mostly struck in silver as rewards for corporate shareholder.
Our generic page on jetons appears at this link. The 'omnibus non sibi' inscription translates roughly to 'for everyone, not for him' referring, apparently, to the king.
It is difficult to find old jetons in good condition today. They were used extensively as counters. So collectors will pay significantly for well preserved examples.
The fountain theme is found on jetons from about 1650 to 1800. Linda's example is from France's Louis (Lvd) XVI, who reigned until 1792, so the date is likely in the last half of the 1700s.
Here are some estimates of typical catalog values for jetons during the reigns of Louis XIV, XV, and XVI:
worn: $5 US dollars approximate catalog value
average circulated: $15
well preserved: $40