You know....when you deal with round wound strings, this buzz stuff becomes more acute if you aren't deadly accurate with your finger placement. Your right hand attack and the string tension, due to different gauges and manufacturing tolerences, also have their say in the buzz war. The slightest crimp or twist in the string can screw everything if you consider having very low action. With the wrong tweeking and set up, I can make every string and note buzz if I want to. That being said, I don't recall any buzzing what so ever. This is based on my playing style.
Regarding construction, I got all that stuff confirmed with Mica some years ago. I recall the back being Walnut and core being white oak. The neck has walnut and (I think I remember) maple lams. I forget what the top is. Perhaps a call to Mica or Val would be in order if you have the time and curiosity. Don't hold me to the absolute correctness on this though. It has been a while.
It is a great bass in feel and sound. Vibrations felt through the body are even and acoustically pleasent. Upgraded it would be killer. The serial # is correct.