Did you get it right?
This fruit stand has two details that do not belong in a 1950s scene.

The Answer
The mistakes are the wireless earbuds case and the smartwatch.
Here is why
- Look for the earbuds case on the stand.
- Check the customer area for the smartwatch.
- Those two items are modern.
Why people miss it
The fruit stand is busy, so the small modern items blend into the display.
Did this one fool you at first glance?