The bridge is a black Gotoh J510B.
The machine heads are Gotoh GB-70s.
Munehiko had the pleasant choice of two basses. He chose the one on the left, preferring the bold grain.
He refers us to Aria's SB-1000JT page (text in Japanese).
Toward the end of 2005, one of the guitar magazines here in the UK ran a review of the JT. I didn't buy the magazine, preferring to read the article in the supermarket aisle! The bass is expensive, retailing at something like £1499, but the quality is unquestionable.