Final answer:
Land is a tangible asset with an unlimited useful life, as it does not depreciate and is non-depletable. Collectibles can have value and may appreciate, but have a finite useful life and variable returns.
Step-by-step explanation:
In the context of tangible assets with potentially unlimited useful lives, a prime example would be land. Land is often deemed to have an unlimited useful life because it does not depreciate over time due to its inherent characteristic of being non-depletable. Other tangible assets such as collectibles, which include paintings, fine wine, jewelry, antiques, or even baseball cards, can have significant value and may even appreciate over time. However, unlike land, they do not have an indefinite useful life, as their condition can deteriorate, or they might no longer remain in vogue. Additionally, collectibles may provide returns in the form of services or the potential for a higher selling price in the future, but they are subject to market fluctuations and do not consistently offer a higher-than-average rate of return over a long period.