I've been looking at/for a nice commercial Mauser for a couple of years and I'm about ready to jump into the deep end...right now I'm trying to decide between two very high condition guns, an inter-war Type B and a pre-war Type C. Even though it was originally the less expensive gun, asking price on the Type C is higher (due to the rarity I suppose).

My question relates to the Type C shown in Speed's book on page 111, apparently made as part of the Argentine contract.

I don't have a great understanding of the DMW/Mauser relationship (I think Mauser was owned by/a part of DMW, and Mauser couldn't fill the larger military orders due to much smaller production capacity??). But the German-made military Argentine Mausers I've seen all have the DMW roll mark...I'm trying to figure out why a Type C that was "part" of the Argentine military order would have the commercial Waffenfabrik Mauser-Oberndorf roll mark with a supposedly military contract serial number?