Anastrol is the aromatase-inhibitor entry in the Magnum Pharmaceuticals line, matching Pharmacom pack for pack at 1 mg per tablet, fifty tablets.
Magnum is an Indian manufacturer with a deliberately compact catalogue - competition-oriented compounds and the ancillaries that go with them - and its cartons carry a holographic verification label.
What actually separates the anastrozole listings on this site from one another is not the molecule, which is identical everywhere, but who pressed the tablet, how many are in the box and what verification the manufacturer stands behind.