Magazine capacities

[RAY1946]

I am new to Lugers and was trying to find a few extra magazines for my 2 Mauser 29/70 Parabellums, one a 9mm and the other a 7.65mm.

Seems like the supply of new Mec-Gar mags has dried up completely and I decided to look on Ebay and Gunbroker for some Luger magazines. The conditions and prices seem to go from average to thru the roof! The interesting thing though is that lots of these magazines only hold 7 rnds.

Both of the Mec-Gars that came with my 2 pistols hold 8 rnds., as did my 1918 Erfurt of 50+ years ago. So, I guess the question I am asking is; Is there a list somewhere of the capacities of the different Luger magazines both past and present? Thanks,............................Ray