SA/SPG stock value?

[RCS]

following groups:

Large/small hole D28293 drawing number P in circle without serifs

by around s/n 22xxx drawing number deleted

by around s/n 28xxx P in circle with serifs

by around s/n 46195 two equal size holes P with serifs

Pre war cartouches are without the crossed cannon stamp

Post WW2 SA SPG rebuild cartouche is often stamped ahead of the location where the original cartouche was located. Postwar has different size letters