La Grande Classique

Five millimeters up from the smallest Grande Classique case, and at 29mm this is still unmistakably a dress watch rather than an everyday-wear piece — the proportions don't change enough between these two sizes to matter much beyond fit. White dial, black leather strap, quartz movement: identical formula to the 24mm reference, which tells you Longines sees this purely as a sizing option rather than a different watch. No water-resistance rating is specified for this particular reference, which is one more signal that this was built for the wrist, not the wrist in the rain.