After the replies from my first post i'm already own the bike.A good friend gifted me because i like it alot and felt something unexplained that touch me in this bike.
Neither he nor I knew anything 'bout frame or parts ( whata shame ).And then i ask here for information.My friend has a bike from his father who died long ago and historical line is broke here.Interesting is that his father was not a cyclist.Mysterious case.
For now i'm not going to sell it.Unfortunately i have almost no knowledge of mechanics
and I could not take care of bike which incidentally has a great ride despite years.