Looking for model suggestion.

Hi- have had a PAM for 6 years (PAM 01499) and have loved it. Looking to trade up to something new and have really liked the Chronographs. However, one of the things I love about my current model is the open case back. I love being able to look at the movement.

Can you guys help me find a Luminor chrono reference that also has an open caseback for my consideration?