I would like to acquire a set of Titleist CB 710 irons which are in a very new state. Whilst I understand that the clubs may have been manufactured some time ago, I would appreciate some advice as to their authenticity. The clubs do not have a holograph however do have a serial number on the club head 39857500. In addition, the shafts have 2 stickers entitled True Temper Dynamic Gold S300. 

Many thanks for your kind assistance