It depends on what "commercial Mauser" you are talking about...I am referring to Oberndorf Mauser Factory Sporters...not later Belgian-made FN Mauser 98 sporters...look at this typical Oberndorf Mauser Model M in 30-06 from c. 1925...it has both "ears" and a stripper clip slot...as well as a small notch at the top rear of the front receiver ring to accommodate the (slightly too long) 30-06 when loading using stripper clips.
Husqvarna made a version of its Swedish Mauser 96 commercial sporter receiver without a thumb cutout. The ones I have seen were in 9.3x62 and 8x57.
