I like the idea, but there aren't any date codes (that I'm aware of) on my current production razors. Even better than a date code would be the original sales receipt, IMO. I don't think I'd go with the VDH starter kit, since the brushes seem to be hit or miss on quality. You don't want your son ending up with a 15 or so year old super-shedder of a brush! I only have two current production razors. Of the two, I would recommend the EJ89. It's a great looking and great shaving razor, and from what I've read - most people agree.
I'm not in the Hall of Fame!