Vlad:
One could speculate on the possibility that your 'Aeronautica Argentina' Colt may have seen service in the Malvinas!

I was able to discover that the equipment used to build Sistema Colts at Esteban de Luca Arsenal (Buenos Aires) from 1936 to 1942, and the FMAP at Rosario from 1942 to 1966, was imported from Germany. Colt did supply the blueprints and tooling though, and the technicians to set it all up in the first place apparently.

Full parts interchangeability with the Hartford Colts that Argentina had been importing from the US since WW1 was indeed a mandatory design specification of the Sistema Colts.

I just did a 7-page article for our local Arms Collectors Journal on the CFS Sistema Colts, to be published in October. There is a ton of info on the web, great fun researching these interesting pistols.

And Rothhammer....
There doesn't exist a beer in Chile we didn't try!