If I had to only have one revolver, probably any on this list would do:
- Model 19/66, 4"
- Model 65, 3"
- Model 10/64, 3" or 4"
- Model 686, 4"
- Model 15, 4"
- Model 696 (or 69)
- Model 60, 3"
I've grouped some that are nearly identical, other than blued or stainless. If they were all on the table and I had to pick one, it might be a matter of choosing which one had a round butt.