Thank you guys.
Well this bike was from my father, it was an old road bike, Portuguese made steel frame.
Portugal is one of the biggest bike frames producers in Europe, and back in the day companies would just copy the international designs.
I don't think the frame is anything fancy, just a standard steel frame with the standard construction from back in the day.
It was in pretty bad shape, but it holds a big sentimental value.
The bike frame was completely strip down and painted red some years ago, all the other parts were new.
There's 7 speed, handle changing gears, Shimano saiguan gears, shimano brakes, Mavic CXP22 wheels and Miranda crankshaft.
it rides very very nice I love it, but I'm having problems with the chain dropping off at the front chainring (no front derailleur)
I did a thread on the problem here:
https://www.cyclechat.net/threads/help-narrow-wide-chainring-on-old-road-bike.261939/
Thank you so much for your help
