1916 Guardia Civil. I ran across one at my LGS a few years ago for $100. I already know that someone will say that they were converted to 7.62X51mm in the 50s or 60s, but not all of them were. Mine is still the original 20 inch barrel in 7X57mm. Fun to shoot, and it is my primary deer rifle, even in full military trim.
If I have to explain why I ride, you wouldn't understand. Explaining sex to an alien would be easier than explaining the feeling, one that boils all that is going on in your life down to what really matters each time you are in The Wind. All I can say is, Life is not Life without it.