There is apparently a "transitional" model between these also..!!..
I recently acquired, from a member of another board, an 092, that has the folowing attributes: new style case, crown guards, bezel, and back(sort of, with the same graphics as the new one, MINUS the serial#!)
Also....it has the older, almost non existent AR, crummy magnifier, and IMNSHO,.. MORE reliable Asian 21j movement!!
(after my experiences over the past 2 yrs, ANYTHING called a "7750" scares the bejeezus out of me!!)
Overall, I'm quite happy with this configuration, since I'm too old to read the date anyhow, and, only @ 11 people on the planet know what a real Arktos looks like anyhow, and they'll never even get close a "peon" like me anyway!! ;)