I have an odd thing with the duplicates view.
I search to see if there was other threads on this, but didn't spot any.

I have books showing up in this view that I can't find a reason for them being there.

For instance, I have two books right now showing up in duplicates, both have the same series name, both have different titles, one has the year filled in.
The rest of the book info is left blank.
So... huh? Off the year and title I would assume that would be enough to signal that these books aren't duplicates.
This seems to work with 98% of my library as well. Duplicates are correct identified and not identified. But then I have these random books.

Any idea what may be throwing the duplicate finder off?

Sequence to find duplicates is:
Series
Format
Volume
Number
Language
Year (both must be defined to compare)
B&W

I assume for series it disregards "The" and other determiners.

i.e. The Transformers = Transformers

Is there a way to make the View Duplicates also check by month if desired?

Because as shown below, shows as a duplicate.

I second that request for Month to also be included - for example, it always shows Damage Control, from marvel, as duplicates, because both series came out on the same year (4 issue limiteds).

There are other series affected by this too. X-Men First class also pops up with false positives for this same reason.

fK