Did you get it right?
One item on the barbershop counter comes from a much later era.

The Answer
The correct answer is: The modern electric hair clipper with a USB cable does not belong in the 1950s barbershop..
Here is why
- Scan the counter beside the shaving mugs.
- Compare the modern clipper with the period combs and razors.
- The USB-charging clipper is the only out-of-era item.
Why people miss it
Its familiar shape looks like a normal barber tool until you notice the charging cable.
What answer did you get before checking?