The one pictured is a 72. I have two 72s and a 472. I also have a carbon that was originally relabeled through Palace Hardware in SF as a "Palace Special" and an older #50 7/8 marketed through Graef and Schmidt. All of them are very good razors and easy to hone. Henckles are well respected but seem less coveted considering their quality. It probably speaks to the availability of them.
Okay. Still trying to learn the Henckel's # designation. I know 1/2 means round toe and that is about it. Most square points I have seen were labeled 472.
I wish they had a resource for deciphering the number system.