It looks like you have the original paint on it. If this bike was in the US, where there is more interest in ORIGINAL bikes, I would leave it alone.
To be honest, if I were in Chile and being so rare, I would go crazy with paint and chrome. I would not worry about original, because it may be difficult to get every little piece you need, in original form.
THis is your decision. No right or wrong answer, but we will tell you what to do anyway! haha!