Dates used:  1960's - 1972?
Inside of helmet:  Foam padding
which is missing
Manufacturer:  Bobbie Enterprises
Logo:  screen printed
Thoughts:  Just an earlier version of the helmet below.    
 
 
Dates used:  1960's - 1972?
Inside of helmet:  Adjustrap
Manufacturer:  Sports Product Corp.,
A Subsidiary of Laich
Logo:  screen printed
Thoughts:  Can anybody say Mantle, Mickey Mantle?  
 
 
Dates used:  1973? - Present
Inside of helmet:  Adjustrap
Manufacturer:  Sports Product Corp.,
A Subsidiary of Laich
Logo:  screen printed
Thoughts:  It is just a skinner logo and Don Mattingly best fits this helmet for me.   
 
Dates used:  1973? - Present
Inside of helmet:  Adjustrap
Manufacturer:  U.S. Cap Company
Logo:  screen printed
Thoughts:  Another duckbilled helmet.