How could we tell? We never saw one up close.
And even if we did, those Starfleet torpedo casings have never been considered to be expensive, rare or difficult to manufacture (they are used as wrappings for corpses!). It's the warheads inside that are the sought-for commodity, as per DS9 "Tribunal".
Which makes sense: shells are shells, but backstage doubletalk from the TNG Tech Manual onwards has been that the antimatter warhead features a microscopic 3D matrix of forcefields to bring the matter and antimatter into contact as efficiently as possible. Firing one big lump into another wouldn't create much of an explosion, beyond the initial one that flung the lumps apart again. But creating the hyper-intricate forcefields just might require the precision of a dedicated, very special replicator. Just putting all the atoms in the right places wouldn't suffice, because, uh, well, there's subspace involved. Or something.
Timo Saloniemi
And even if we did, those Starfleet torpedo casings have never been considered to be expensive, rare or difficult to manufacture (they are used as wrappings for corpses!). It's the warheads inside that are the sought-for commodity, as per DS9 "Tribunal".
Which makes sense: shells are shells, but backstage doubletalk from the TNG Tech Manual onwards has been that the antimatter warhead features a microscopic 3D matrix of forcefields to bring the matter and antimatter into contact as efficiently as possible. Firing one big lump into another wouldn't create much of an explosion, beyond the initial one that flung the lumps apart again. But creating the hyper-intricate forcefields just might require the precision of a dedicated, very special replicator. Just putting all the atoms in the right places wouldn't suffice, because, uh, well, there's subspace involved. Or something.
Timo Saloniemi