Model 20 Stripper Clip Channel

[Model24]

I’m looking at a Model 20 with no stripper clip channel. Is this a difference between the Models 1920 and 20/26?

[Sav22]

Only the very last of the Model 20/26's were without the stripper clip notch, so, quite a rare version. There was one, serial number 12695, that sold at auction recently - https://www.proxibid.com/Savage-Model-20-in-300-Savage/lotInformation/63861242
The gun is not all original, it was the subject of this thread on another site - https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/13492264

[Model24]

Thank you for the answer and the links!