None of them look particularly Mdina-ish to me, thought they might be from a late period, beyond where my interest lies.
They did do some foiled stuff, but I've only seen gold foil, not both silver and gold.
These are more interesting looking than the Mdina foiled stuff, I'd go with Phoenician too.
I think that Phoenician glass is very competent and that it diversified from Mdina in more interesting ways than the other Maltese makers.