CJS57
Perhaps I've not really understood your question, but FWIK the so called "Mauser hump" can be found mainly
on early K Lugers and some Lugers with hump can be found among the K production.
Later on, "G" dated ones hardly had the hump, but towards the end of 1937 if I'm not wrong, the hump became quite common in Mauser production.
Just to complicate the life of nowadays collectors S/42 made in 1937 have several variations, among them there was a last strawed variation with the hump while later still Mauser produced only blued Lugers all of them with the hump.
But basically nothing is ever written in stone, I enclose a picture of my strawed "K" Luger wihout the hump...
