Did you get it right?
This 1950s train-station shoe-shine stand shows polish tins, cloth rags, a coin tray, paper tickets, a suitcase footrest, and a wooden chair. Two small details do not fit the period.

The Answer
The correct answer is: The foam insole heel pad under the footrest and the plastic snap-on polish-lid ring mixed with the old tins are the two mistakes..
Here is why
- The chair, polish tins, rags, coin tray, and paper tickets fit the old station setting.
- Look around the footrest and the polish tins instead of only reading the signs.
- The foam heel pad and plastic lid ring are the modern material clues.
Why people miss it
Shoe-shine stands already have many small round tins, dark shadows, and worn leather details, so modern materials can blend into the ordinary clutter.
What answer did you get before checking?