That was a version 2. The date window is beveled on that which is good. You'll have to do a search for all the differences. It comes from a different factory than the V3.
Most people recommend servicing watches every 5 years. Both movements should last many years, particularly with servicing.
And, Watchlover1, I strongly feel there are a lot of watch repair people that wouldn't immediately know the difference between the Swiss and Asian, especially when the Asian has the ETA stamp. I had a watch repairman tell me a movement was Swiss ETA that I knew for a fact it wasn't.