MAG-020 Magic Spectacles - Photographic Supplement to The Magnet
Commencing with the 14 February 1936 issue of The Magnet (front cover illustrated above) and for the next five issues, the publication gave away six sheets of photographs. They are printed in blue and red and are very 'fuzzy', that's because by looking at them with the 'Magic Spectacles' the images would appear in 3D. These sheets rarely become available these day.
I've tried searching the internet for more information without much success but I presume that these were one of the earliest types of 3D imagery.
UPDATE (06-08-2019 14:47): Titles of the pictures on the first sheet have been added. This checklist is now complete.
(Sheet 1) 14-02-1936
R.M.S. Queen Mary
Clipper Ship "Ariel"
(Sheet 2) 21-02-1936
The famous All Blacks Rugby Team in Action
Great Sydney Harbour Bridge
(Sheet 3) 28-02-1936
Italian War Tanks Advancing
(Sheet 4) 21-03-1936
L.N.E.R. Silver Jubille Train
New York Central Streamlined Loco
(Sheet 5) 21-03-1936
New Cunard White Star Liner, “Queen Mary”
French liner, "Normandie", entering New York Harbour
(Sheet 6) 21-03-1936
Sheffield Wednesday v West Bromwich Albion - F.A. Cup Final, 1935
Hawker Harts Squadron