I have two matched plate block sets from Plate Block 1. The others are just blocks. Bileski labeled them, however, I know from past experience that Bileski cannot be trusted 100%. None are Harrison (no tinge).
SF - Speckled fluorescent paper (labeled as "F + H")
DSF - Dull paper with speckled fluorescent (labeled as "D + H")
F - Fluorescent paper
From Plate 2 - Low Fluorescent Paper
The Unitrade I have (2020) only mentions Low Fluorescence and Non-Fluorescent. (below)
I would believe that these are all from Plate 1 or 2? Is there any other resource differentiating them with more specifics?