What makes a mechanical mod authentic
Made by the person/company that designed it.
It use to be that when a noob asked what to get, we just said 'get an eGo'. Now there are so many eGo knock offs on the market that are of poor quality that we can't in good conscience suggest them.
Now understand that there is a difference between a 1-1 clone (which is the same as the origional), and a knock off of lesser quality.
You will find both when looking at mechanicals. There are clones that are good quality, and also some that wouldn't make a good paper weight. However I've seen a few 'origionals' that couldn't hold down a square of TP.
I'm liking the HCigar mechanical clones. They seem very true to the origionals. They even need the same 'fixes' that the origionals needed.
They just cost -50$ instead of $200+.