There are a few companies that provide professional coin grading services, the most well-known being PCGS and NGC. To have your coins graded by either of these companies, you will need to send them in for assessment. The turnaround time for this process can vary but is typically around 4-6 weeks. There is a fee associated with professional coin grading, which is typically a percentage of the value of the coins being graded.
Getting your coins professionally graded is a great way to ensure they are accurately graded and valued. This can be important if you are looking to sell or insure your collection. It can also give you peace of mind knowing that your coins have been assessed by experts.