Looks like a standard production model to me. I'd say its one of the very first ones. The Macintosh was introduced on January 24th, 1984, so you can imagine that they would have already started filling up the supply channel a couple of months in advance after they got the design right so that they can satisfy demand.

For the record, I'm fairly sure that all 128's were built in Fremont, I'm fairly sure mine was - I'll have to check.