@TheDollarLamadepends what you mean by mid to large cap
there arent any aussie silver dominant play large current producers on ASX apart from S32
you can get some goldies with fractional silver output - but it seems unlikely theyll follow silver
NYSE/TSX are the markets for actual current large scale silver production - PAAS, AG, CDE etc
locally - i'd say the most obvious play is SVL - KCN is interesting if you have faith they win their negotiation with Thai govt - heavily overpriced if not
personally I think CFDs are unwise choice for precious metals - the space is too volatile. There's already huge leverage in any of the stocks we're talking about if silver goes on a decent run higher