These are Yamahas Explorers and Flying Vs.
Information on these guitars is quite hard to come by and pictures particularly of the EXs are scarce.
What we do know is that four models were launched in October 1985 and production lasted about a year. The four models are the
EX1 the EX2 the VX1 and the VX2 only the EX2 is detailed in the Yamaha Archives. It is fair to assume that these guitars are
the same basic specifications the EX and VX differing only in body shape. The models 1 have traditional trems and nuts and the
2s have Rockin Magic trems and locking nuts. The 2s have coil taps and it suggested that the 1s don't I have no proof
that the 1s don't.
Update Sept 2017
I have some information from a seller on Reverb who is selling a VX1 and a VX2, the VX1 definitely doesn't have a coil tap, he also states that both his guitars have the original pickups and that they are Seymour Duncan SH8 Invaders. Does this mean that some Seymour Duncans are Spinex pickups?
As I suggested earlier it is my belief that the specs for all these guitars are broadly similar. The differences being the nuts, bridges
and coil taps as mentioned previously and also the colours. The only specs recorded are for the EX2 which are:
Body Maple and Nato
Neck Bolt on Maple with an Ebony Fretboard and 22 frets
Price on release 100,000 yen
Bridge Rockin Magic Pro
Pickups SSH-11 Spinex x 2 see update above
Controls 1 volume 1 tone with coil tap and three way selector switch
Colours Flake Black and Pearl White
Known colours for other models EX1 Pink VX1 Blue VX2 Red what other colours there are I don't know.
Any additional information on these would be much appreciated.