Five Star Gift Ideas

That's great! Here are some gift ideas for your grandpa who is interested in horology:

1. A vintage pocket watch: Your grandpa may appreciate a classic vintage pocket watch that he can add to his collection. You can search for a watch that matches his personal style and preferences.

2. Horology books: There are plenty of great books available that can help him learn more about horology. You can look for a book that covers the history of timekeeping, famous watchmakers, or more specific topics that align with his interests.

3. Watchmaking toolset: If your grandpa is interested in the nitty-gritty of watchmaking, a watchmaking toolset could be a perfect gift. This can provide him with the necessary tools to disassemble, clean, and repair his watches.

4. Customized watch straps: If your grandpa already owns several watches, consider purchasing custom watch straps. You can choose from a range of materials such as leather, suede, or NATO straps, and personalize them with unique engraving or stitching.

5. Museum tickets: You can also consider taking your grandpa to a horology museum or an exhibit that displays some of the world's most iconic watches. This can be a great experience for him to learn and witness the history of watches in action!

Or you can get him a star map with an important date you share.