Wooden utensils take on an unmistakably aged appearance, vintage metal cookware and service pieces dull and darken with time, and the factory-original paint on most items will discolor and show traces of damage. Collectively, we speak of the look that comes with long use as the item's "patina." There's no meaningful way to fake it, despite various well-established techniques for making new-made items look deliberately old and rustic. It won't fool a practiced eye, and thankfully that trend is outdated anyway.
Vintage kitchenware, including cast iron pans and mid-century dishes, can be surprisingly valuable and cherished for their durability and craftsmanship. A thrift store find may be worth much more.