The 3-D movie craze briefly flared-up and died-out in the mid-1950s! It's apex being the year 1953.
Now, I'm not about to say that comic books were "behind the times" (...because, far more often than not, they looked forward rather than backward) but apparently, in comic books, the 3-D movie craze held on into the next decade...or two!
For evidence of this, we need look no further than today's "Separation at..." well, not exactly "Mirth"... but maybe...um, "Delightful Weirdness"? That okay, with you all?
AHEM! And so, we present today's "Whatchamacallit Separation" that brings together the heretofore "Separated" BLACKHAWK #157 (DC Comics, Cover Date: February, 1961)...
...And BORIS KARLOFF TALES OF MYSTERY #35 (Gold Key Comics, Cover Date: June, 1971).
And, just like those fondly-remembered movies of the '50s, some scary stuff is "comin' atcha!"
Put 'em together in reverse chronological order, and they're "comin' at each other!"
...Perhaps it's better - and safer - this way!
Oh, and from (more or less) the heart of the 3-D movie craze, we can add the first page of WONDER WOMAN #64 (DC Comics, Cover Date: February, 1954)... Actual On-Sale Date: 1953-12-21.
...Showing that comic books also did this bit when it was current!
There we have the 3-D Triumvirate of BLACKHAWK #157, BORIS KARLOFF TALES OF MYSTERY #35, and WONDER WOMAN #64... Separated at (the Third Dimension of) Mirth!