What year did Schwinn change the decal style on the tanks?

[barneyguey]

I bought this tank the other day and was wondering what year it might be? I'm thinking 1960's , but don't know for sure. Thank you. Barry

It has the dents the springer fork legs make

 

[GTs58]

That one was new in 1959.

 

[barneyguey]

That one was new in 1959.

Thank you sir! Barry