Vintage Montgomery Ward & Company Large Cast Iron Cookware    US $5.50

Vintage Wagner Ware Cast Iron Cookware 5 Qt. Dutch Oven No Lid    US $29.99

Vintage Flame Orange DESCOWARE BELGIUM COOKWARE Bean Pot Cast Iron Enamel    US $49.99

LODGE VINTAGE CAST IRON CORN BREAD MUFFIN PAN 5PP2 USA FISH BASS PERCH COOKWARE    US $29.99

Vintage cast iron corn bread mould, baking pan, johnny cake, antique cookware    US $.01

vintage RED, White Square Cast Iron Enamel Cookware Casserole with Lid Poland?    US $33.00

3 Piece Vintage Casron Cast Iron Cookware- Orange    US $45.00

OLD VINTAGE 9" PORCELAIN ENAMEL CAST IRON 2 HANDLE POT COOKWARE    US $3.50

Lot of 7 VTG BELGIUM COOKWARE Bean Pot Orange Flame Cast Iron Enamel Descoware    US $49.95

does anyone know if:
• vintage cast iron like griswold or wagner ware, or
• enameled cast iron like le creuset, staub or descoware
can go straight from refrigerator or freezer:
• onto a gas range top, or
• into an oven, or
• under a broiler?
thanks for any help as i'm starting to build a small vintage cookware collection!