Some Rolex models have been known to increase in value over time due to factors such as rarity, collectibility, and demand. Here are some Rolex models that have a reputation for appreciating value:

1. Rolex Daytona: The Rolex Daytona is a chronograph watch known for its sporty and elegant design. Due to its rarity and limited availability, the Daytona is a highly sought-after model, especially in vintage or limited-edition versions. Some Daytona models have appreciated more than 100% over the past decade.
2. Rolex Submariner: The Rolex Submariner is a classic dive watch known for its durability, reliability, and iconic design. Due to its historical significance and collectibility, the Submariner is a popular model, especially in vintage or limited-edition versions. Some Submariner models have appreciated more than 50% over the past decade.
3. Rolex GMT-Master II: The Rolex GMT-Master II is a dual-time zone watch for travelers and pilots. Due to its historical significance and distinctive design, the GMT-Master II is a popular model, especially in vintage or limited-edition versions. Some GMT-Master II models have appreciated more than 50% over the past decade.
4. Rolex Explorer: The Rolex Explorer is a classic adventure watch known for its ruggedness, reliability, and simple design. The Explorer is a popular model, especially in vintage or limited-edition versions, due to its historical significance and collectibility. Some Explorer models have appreciated more than 50% over the past decade.

While some Rolex models may appreciate over time, the value of a watch can also depend on several factors, such as the specific model, condition, and market demand. Purchasing from an authorized dealer or reseller is also important to ensure authenticity and fair pricing.