Vintage WagnerWare Sidney -0- Magnalite 8 qt Oval Roaster 4265-M no lid WagnerWare Sidney -O- Magnalite 8 quart Oval Roaster Dutch Oven 4265-M. This is well used and cared for with the usual scars that come from weekly use for 70 years (that's 3,640 Sunday roasts and baked chickens). This Art Deco roaster looks super cool.. Made between 1934 and 1959. Magnalite is known for its even cooking due to the ability of the magnesium-aluminum alloy to conduct heat, it's ~12-3/4" x 10" x 4-1/2", not including handles. This will definitely be a great addition to your kitchen. No lid