[Discussion] What are some watches that make it obvious someone is a warch nerd?

Non-examples:

  1. Well known name brands like Rolex, Cartier, etc. Don't get me wrong, people with day dates and stuff can totally be watch nerds too, but it's also possible to get them just for the name.

  2. Anything blinged out or gaudy like Richard Mille. RM actually makes stuff that's pretty cool horologically, but many of the owners are athletes who aren't really into watches.

  3. Vintage. This is controversial because lots of watch nerds have vintage watches. However, theres also a lot of people who inherit a vintage watch from a parent or grandparent and have no idea what it is.

What watches make you say 100% that someone is a watch nerd?

Non-examples:

  1. Well known name brands like Rolex, Cartier, etc. Don't get me wrong, people with day dates and stuff can totally be watch nerds too, but it's also possible to get them just for the name.

  2. Anything blinged out or gaudy like Richard Mille. RM actually makes stuff that's pretty cool horologically, but many of the owners are athletes who aren't really into watches.

  3. Vintage. This is controversial because lots of watch nerds have vintage watches. However, theres also a lot of people who inherit a vintage watch from a parent or grandparent and have no idea what it is.

What watches make you say 100% that someone is a watch nerd?