December 2021 presentationIf you look at the December presentation, they are starting to run through the concentrate from their 50/50 JV with Rio Silver through the plant this quarter (one quarter of the plant production). Plant capacity will also be increaed over 100% by mid year.
If you look at the material from the Rio Silver jv, it is high grade gold/silver/copper. So perhaps this recent rise is due to PER becoming a gold/silver producer this month. Rising share price might be due to it's working out.
https://www.peruvianmetals.com/_downloads/PeruvianMetals-Presentation-Dec2020.pdf