Comparing a new batch against an old one. A loose blister is different in a way that may be nothing.
A batch number and an expiry that are almost up on a new purchase usually means the box was copied.
Weight and dimensions are how blank tablets get identified, and you cannot do that from a photo.
Light quality ruins more identification photos than anything else. Daylight, no flash.
Genuine cartons have print that aligns to the die cut. Copies drift by a millimetre or so.
Does this ring a bell for anyone?
How do you get a clear photo of an imprint? Mine keep coming out blurry.
Ten percent cuts, of the current dose not the original. That is the arithmetic that keeps it survivable.
Imprint databases are mostly US-centric. A confident hit for another market is still a guess. Not on a loose blister but the pattern is familiar.