Did you get it right?
Two modern details slipped into this 1950s barbershop shoeshine corner.

The Answer
The correct answer is: the disposable razor cartridge package and the barcode appointment sticker.
Here is why
- A modern multi-blade razor cartridge package sits on the shelf.
- A barcode-style sticker appears on the small paper ticket near the counter.
Why people miss it
Both clues are barber-related, so they blend in, but the packaging and barcode do not match the old shop.
What answer did you get before checking?