Classifications and Descriptions
Luminescent – whitish blue under UV light – has no after glow – reflects UV light
Phosphorescent – yellowish under UV light – has after glow – absorbs UV light
( A ) Thin paper – yellowish gum – wmk. 300
( D ) As (A) – Horiz. Wmk.
( E ) As (A) – Vert. Wmk
( G ) Thick Paper – yellowish gum – wmk 350
( H ) Thick Paper – yellowish dull gum – wmk 300 – Luminescent
( I ) Thin Paper – white gum – wmk. 350 – Luminescent
( J ) Thick Paper – yellowish glossy gum – wmk 300 – Phosphorescent
( K ) Thick chalk surface paper – white dull gum – wmk 300 – Phosphorescent
( L ) Thick chalk surface paper – whitish semi-dull gum – wmk 300 – Phosphorescent