Did you get it right?
This post-office puzzle asks for one mismatch among mail sacks, stamped envelopes, twine, rubber stamps, a scale, and sorting boxes.

The Answer
The correct answer is: The modern padded bubble mailer with a peel-strip edge is the item that does not belong..
Here is why
- The sacks, envelopes, stamps, pigeonholes, twine, and brass scale fit the old post-office table.
- Look at the mail on the front table.
- The padded bubble mailer and peel-strip edge are modern packaging clues.
Why people miss it
The bubble mailer is tan and sits among ordinary envelopes, so it looks like old mail until you notice its padding and peel-strip construction.
What answer did you get before checking?