Fr. 121m. 1901 $10 Legal Tender Mule Note. PCGS Currency Very Fine 20 PPQ. Mule. A very pleasing example of this later signature combination Bison note. The bright paper and bold inks make it easy to see why the PPQ designation was applied by PCGS. Unless you have been hiding under a rock, you are aware that large type prices continue to surge forward with each successive sale.