Thanks for visiting my company to see this watch. If you're interested in something larger, we periodically have the earlier pre-"1941" Gronefeld and recent DeltaWorks cases that are considerably larger than the watch you saw. Alternatively, a De Bethune DB25 in 42mm or 44mm would give the classic "round watch" look with automatic winding and a quality level comparable to Gronefeld. We have those available if you'd like to see one. Also, a Romain Gauthier Prestige HMS at 43 would be a good alternative. The RG Insight, also 39mm, might seem less petit than the Principia you tried.