The obverse legend, like other French coins, gives the kingâs title as Francorum Rex ( King of the Franks  in Latin) and provides another reason to call the coin a franc. Its value was set as one livre tournois (a money of account).
Favor has a no-tipping policy from company to restauraunt, so those waitstaff that take your order pay out the kitchen (they have to pay out a certain percentage of their total sales) for you to not tip. They pay the kitchen to make these orders and make no money, unless you tip out of pocket.
1 If a restaurant only charges a nominal delivery fee of $10 or less, a tip of around 7 to 12% is likely appropriate. 2  If they charge a delivery fee of more than $20, and the distance traveled is not terribly far, then tips of 5% or less (and no more than 10%) are probably more appropriate.