I know this subject has been beaten to death I guess I just don't pay attention.

1. What is the 3H mean I know the letter & number means it was made by Martin right? but there is more to it and I can't remember.

2. What does the SE mean on my top limb (08 Saber)

3. Since the Saber was not a Pro Series Bow in 2008 (or ever that I can tell) why is Pro Series printed on my bottom limb

My Saber is 2008 model and has the Mpro Cam 55-70# limbs.