Out of curiosity - I looked up what a White 626 looks like, and it's not at all like the one in the picture, in fact the ones I found images of (showing the model number on the machine too) are pink.
So that one probably is a 670. At least they are turning up occasionally, so I figure it will only be a matter of time before I get one.
You have a good eye to have spotted it from that not so good picture LOL!