So I bought a bike on craigslist and was told it was a mutiny sinister. But it's not I can tell because the sinister has this solid fat bar running across the top chain stay. Mine has a slim bar with two cut-outs as you can see in the pics. And when I search the numbers on the bottom nothing comes up. It has integrated headset and all but I just hope I have a good chromoly bike. But it came with chrome bars half link chain and all so I was wondering why someone would even invest money into a junk bike so it may be good. Help!