Yes, thanks for the tips:
and feel under the top tube just behind the head tube for lumps and bumps. And make sure it fits you - the wrong sized bike will never make you smile.
I actually came across what I thought was a real nice bike, it was being abandoned by the owner and I took it. It really was nice, a sky blue framed bike but in the midday sun, I wasn't sure if it might be Celeste Blue, oh well. Since I thought maybe it was a Bianchi, I asked the people, can I take this? Yes.
It was a Japanese "Star" bicycle. It had a Shimano Crane derailleur which I've been told is the predecessor to their successful Ultegra line and one I still keep with me to put on the right set of wheels.
To keep my story short, I rode it many miles, I never wrecked it but a mechanic showed me a bump, the bottom of the down tube where it comes out from the headtube, that is easy for visulalization of how ramming something or a wreck could have gotten this metal frame that bump.
It was a great bike and the mechanic was a bit of a snooty modern bicycle mechanic but in good faith, I could not ride that anymore, as my main frame and I took the parts and disgarded it.
So, with that bump where I described it, on the downtube coming out of the headtube, about an inch down, right around the lug, You would probably agree that that was not a safe bicycle as well.
Nifty bike and I'd had the experience to see a few others around to know this was not the rarest of creature so I was able to part with it.