B.F.Goodrich bicycle age unknown

This bike was handed down to me as a child. I rode it everywhere though its not the height of fashion for anything current. I didn't care as I love it very much. I just wish I had more info on it. It still has the tires I got it with and with a little air you can still ride it around. It says on the front plate B.F. Goodrich Challenger but on the chain guard it says B.F. Goodrich Vanguard II. So I am confused as to which model it is. The fenders still shine as does most of its chrome. The seat is worn but still all there. I took good care of it and just would like to know more about it. The paint is starting to fade off but its the original colors. I included what stamping I could find on it if anyone else has info to run it against. I've looked for years on the internet to no avail. Thanks for looking.

-Anthony