Look for the Hodinkee article about this reference. The article suggested that the movement (12-600 AT if I remember correctly) is as good as it gets. Also I believe that the dial is enamel. Beautiful watch.

This is my first Patek with an amagnetic movement but not my first Patek. I have owned a different vintage gold Calatrava (I don't remember the model but it had the 23-300 movement) and I had a 5066. I prefer vintage so after much consideration I switched to the 3410. I think that it is a wonderful

Hello, My first post here. I just got my first Patek (a 3410) with the 27-AM 400 movement. I love how these show up in a variety of models. Perhaps we could use this thread to compile a list of models that have it. Of course pictures are a must.