hey Tindrrel, that looks excellent, really the IB-5 has a cap, whats the back and sides basswood ? should be a full chunk of ash with maybe 3 or 4 pieces glued together.
Last batch of nullarbor ochre Bargeloobs applied was quite red too
Either way the colour looks excellent.
That is filler the factory has used the parts where the stain won't take.
looking at the cut ways it looks like no veneer, that is ash on the sides