MAG isn't fairly valued (by a factor of 3) based on the 43-101 on the Valdecanas vein alone, which has been extended considerably since the report was put out (and deliberately lowballed by Fresnillo, since they chose a cutoff date that ignored several VERY high grade holes).
I count 4 other veins on the same property in the news release there: Footwall, Hanging Wall, New Hanging Wall, and Juanicipio.
Of course, this doesn't include the Batopilas or Cinco de Mayo properties, where MAG has drill results >500g/tonne Ag.
MAG is so being worked over, it's criminal.