Lox, heirloom tomato sandwich

I think this exemplifies the beauty of a simple well-made sandwich.

Once a friend's mother made this. We were in high school. I didn't like it but her's didn't have tomato. That was an impressive disconnect. The son was an archetypical Western cowboy but his mother was an elegant divorcée who served us elegant sandwiches in their elegant home. It didn't fit. 

The thing that makes this sandwich different is the tomato and the bread. It is an heirloom tomato and they taste different than regular grocery store tomatoes, and the bread is my own sourdough bread. 

This is what the crumb looks like.

 Norwegian lox, Happy Cow cream cheese.