I have an older panasonic bike that I bought from a bike shop and few years ago for $35, needs new tires and a bit of transmission (shifter) work. It is not with me right now, but when I get it back, how can I find out information on it? Will there be a serial number I can search up on the internet? I will post a pic EVENTUALLY if I can and maybe you guys can help me out, till then, happy riding!