Dates used:  1960's - ????
Inside of helmet:  Foam padding
Manufacturer:  Detroit Sportservice, Inc.
Logo:  sticker
Thoughts:   This helmet is different from the others I have because the sticker is a larger cut out "D" and another sticker inside the helmet gives a different manufacturer which can be seen above.
 
 
Dates used:  1960's - ????
Inside of helmet:  Adjustrap
Manufacturer:  Sports Product Corp.,
A Subsidiary of Laich
Logo:  sticker
Thoughts:  
Not for sure when this logo changed to the bigger "D."   
 
Dates used:  1960's - ????
Inside of helmet:  Adjustrap
Manufacturer:  Sports Product Corp.,
A Subsidiary of Laich
Logo:  screen printed
Thoughts:  Again, not for sure when this logo changed to the one below.  
 
 
Dates used:  1983 - Present?
Inside of helmet:  Adjustrap
Manufacturer:  Sports Product Corp.,
A Subsidiary of Laich
Logo:  screen printed
Thoughts:  I'm just not for sure if, or even when, this logo came out as compared to the two helmets above.  
 
Curtis Granderson Detriot Tigers 8X10 Photo
Dates used:  1983 - Present
Inside of helmet:  Adjustrap
Manufacturer:  Sports Product Corp.,
A Subsidiary of Laich
Logo:  screen printed
Thoughts:  

 
 
Dates used:  1994 - 97
Inside of helmet:  Adjustrap
Manufacturer:  Sports Product Corp.,
A Subsidiary of Laich
Logo:  screen printed
Thoughts: Come to find out, this helmet was used by the Tigers when on the road.  Now I just need to find a decent photo of that!