Superman #75 Error Variant:
Misnumbered #74

DC Comics (National Comics), published Date: March-April 1952.

Superman #74 (below) was distributed in late 1951 with a published date of Jan-Feb 1952. However, in early 1952, #75, with a cover by Al Plastino, was initially distributed and mis-numbered as #74 (above), possibly confusing some readers.

Sometime during the print run, DC (National Comics) corrected the key/black plate and subsequent covers were printed with #75 as the issue number:

As the indicias are no different on the two versions, both CGC and CBCS decided (very annoyingly) to group the versions together, despite the obvious error on the initial print run: CGC states "Version misnumbered #74 on cover exists" and CBCS states "2 versions exist. 1 with #74 on cover". However, CGC also seem to also have this as completely separate issue in their census: Superman #75 (74) with the text "Misnumbered #74 on cover" so a few of the misnumbered copies are separated out but hard to spot in the census due to the issue number 75 (74) and not being grouped as a variant of #75. This is all a little messy and does not mirror other misnumbered error variants such as Action Comics #223 Error Variant (misnumbered as #233), which is a variant of #223 in the census.

It is unknown how many of the misnumbered error variants were printed, distributed or exist today but they certainly seem to be a small proportion of the overall population of #75.