Yes, it's legit, and I know the guy who is in charge of that location that stocks this bass. Someone traded in without the cable and DS-5, and he had to source them (cable is sourced in Japan, I'm using the cable from the same company and works just fine.)
It is pretty decent shape, much less finish checking compared to my '79, serial number is 79 - 1446.
I like this placement of neck pickup: just enough space for your finger to pull, and close enough to retain the classic look. I personally don't like the recent spacing.
Just remove the truss rod cover and you are good to go!
If you're interested, go for it! I've dealt with them for a while, very good shop.
Takeo