Vern,
Here are a couple of shots from bottom-views that Members have previously posted and one "spurious" one that appeared and sold on eBay for quite a bit of money.
I will let you decide which one that one was...
A LF member out of MO state used to publish a Luger parts list where he offered for sale repro Cal 9 m/m magazines...I imagine some of those may be being resold as "originals" in the wrong hands.