One online bullion dealer was showing a spot silver price of $81, when the actual spot price was $76. Likewise, another dealer had a 1 Oz bar selling £96, but they would only pay £57 for the very same product.
I would not expect fres to rise 4.4% in line with silver as gold production accounts for a significant part of the SP. In fact the silver production is just about in line with guidance and gold production could be at the top end of guidance.