Le Rubis and Le Baron Rouge

Since this is still winter, maybe we should think about oysters. Evidently this is when the oysterman comes with his truck to the Baron Rouge to sell them on Saturday and Sunday. Girls' Guide to Paris has a nice posting on Le Baron Rouge and his oysters, and then goes on to mention a similar restaurant Le Rubis, which is a wine bar. They say "The food is as unpretentious as the wine. Saucisse with lentils, hot saucisson, sauté of lamb with white beans, tripe and tête de veau."

The Girls' Guide says:
In a nutshell: Le Rubis is where to fulfill your fantasy of old Paris while refilling your wine glass.
Price check: Main courses are no more than 12 euros. The only way to overspend here is by drinking too much.