Carbonite bombs:
Bomb fuse: brass
Crates: wood; Fittings / hinges blackened metal; red seal (paper strip);
... stamped on the box, or attached to the outside of the box as a printed slip
P.u.W. bombs:
Igniter for 12.5kg P.u.W. Bombs: brassIgniter for 50kg, 100kg, 300kg and 1000kg P.u.W. Bombs: steel
Crates: Printed label glued inside the lid. No further information available