UV LIGHT REVEALS MORE NUMBERS
STEP BY STEP
CODE PAGE
Step 1.
Top right-hand corner, usually referred to as a 'stain' but is, in fact, another instance of the Police marking over details. Using UV light in a dark room shows some of those details.
Step 2.
Immediately noted the presence of unusual markings within the highlighted area in particular
Step 3.
Adjusted the colour balance of the image to sharpen the shapes and numbers are visible
Step 4.
Highlighted number set, other markings are visible.
South Australian Police used UV lighting to detect fingerprints amongst other things during the 1940s.