Can you spot it?

At first glance, this scene looks like a perfect 1960s American diner. A waitress in a pink-and-white uniform is pouring coffee for a customer, while a gentleman in a brown jacket sits at the counter. A vintage jukebox, classic photographs, retro hairstyles, and old-fashioned diner items all create a convincing nostalgic atmosphere. Everything seems to belong to the same time period, but one small detail does not fit.

The challenge is to carefully inspect the entire picture and find the object that could not have appeared in a typical 1960s diner. Look closely at the walls, the jukebox, the clothing, and especially the items placed on the long green counter. The mistake is easy to miss if you only look at the larger objects, so pay attention to the smaller details around the coffee cup and sauce bottles.