Harry, Tony's in St. Louis is one of my very favorite restaurants anywhere. The good folks of St. Louis seem to consider it singularly expensive and fancy, making it a special-occasion only sort of place. However, by Chicago standards, IMO, it's a real bargain. (Spring/160 Blue/MK prices rather than Trio/Tru/Trotter prices.)
It's known as a steak place, and the meat is quite good. However, it is a very fine Italian restaurant as well. (In contrast to Chicago "Italian Steakhouses," Tony's has Italian-Italian food, not Italian-American food.) The kitchen has a deft hand with pastas, including interesting stuffed options like panserotti. Top-notch versions of classics like veal milanesa and osso buco are often the specials. Very pleasant room. Service can be a little overwrought, as it is in the "continental" style, with lots of rolling carts, tableside finishing, etc., like what you still get at Cafe La Cave here.
Nice deep wine list, esp. Italians.
In my experience, there isn't another place in St. Louis that even tries to come close.
Jackets required. Amazingly easy to get tables during the week, owing to its lofty reputation, I guess.