The service intervals for cleaning and relubricating watches and clocks can vary depending on the type of timepiece and its usage. However, here are some general guidelines based on common practices:

1. Mechanical Watches:

   • Every 3-5 Years: Mechanical watches, especially those that are worn daily, should be serviced every 3 to 5 years. This includes cleaning, lubrication, and adjustments to ensure accurate timekeeping.

   • Water-Resistant Watches: If you frequently expose your watch to water or wear it in humid conditions, consider servicing it more frequently, around every 2-3 years.

2. Automatic Watches:

   • Every 5 Years: Automatic watches have self-winding mechanisms. They should be serviced every 5 years or as needed if you notice a significant drop in accuracy or power reserve.

3. Quartz Watches:

   • Every 5-7 Years: Quartz watches are known for their low maintenance requirements. A battery change is usually all that's needed. However, if your quartz watch has mechanical parts like hands or date complications, consider servicing it every 5-7 years.

4. Vintage Watches:

   • Every 2-3 Years: Vintage watches, especially if they're valuable or sentimental, should be serviced more frequently, typically every 2-3 years, to prevent excessive wear and damage.

5. Antique Clocks:

   • Every 5-10 Years: Antique clocks, such as grandfather clocks, mantel clocks, or wall clocks, may require servicing every 5-10 years, depending on their age, complexity, and usage.

6. Modern Wall and Mantel Clocks:

   • Every 5-7 Years: Modern wall and mantel clocks with quartz movements usually require servicing every 5-7 years to ensure accurate timekeeping and to clean and lubricate any mechanical parts.

7. Cuckoo Clocks:

   • Every 2-4 Years: Cuckoo clocks have intricate movements and are often handcrafted. They should be serviced every 2-4 years to maintain their charm and functionality.

8. Specialty Clocks (e.g., Atmos Clocks):

   • Every 7-10 Years: Specialty clocks like the Jaeger-LeCoultre Atmos clock require servicing every 7-10 years to maintain their unique and delicate mechanisms.

It's important to note that these are general recommendations, and the actual service interval can vary based on factors like the brand, the quality of the watch or clock, and how often it's used. If you notice any irregularities in timekeeping or other issues, it's a good idea to have your timepiece serviced sooner rather than waiting for the scheduled interval. Additionally, always consult the manufacturer's recommendations or a qualified watchmaker or clock specialist for specific maintenance advice for your timepiece.