I Think These Are Fake

Hmm, very biblical... a widow's mite, a "tribute penny" denarius, and a "thirty-pieces-of-silver" tetradrachm of Tyre. If you picked them up from a scratchtray, then yes, I'd say they're fake.

The tetradrachm looks worst to me, the low points are lacking in detail, like the design is "melting back" into the coin - sign of a shallow casting.

The denarius doesn't look convincing to me, either, with the pitting like that.

The little lepton is hardest to condemn from the photos, but if it was obtained from the same source, then it's probably guilty by association.