Hi Dear Titleist Staff,

I have just purchased a 910 D3 Driver from an authorized dealer/store  (not on internet).

But when i got home i found that there is no serial number marked on its head.

So i went to another store which also sells Titleist Drivers, i found that some of the 910 D3 Drivers there do have 

serial numbers marked on the driver's head.

I want to find out if the product i have purchases is authentic or not?

Because the dealer where i purchased from claims that the newly on the market 910D3 drivers don't have serial number marked on their heads (only on the shaft). 

I am really puzzled here.

Could you please help?