Well, I found out, the hard way, by having a luthier prise the block up - it was held down by screws, pathetic little thin screws .... this is due to a 'production mix up' which means that they applied the lacquer using a mask that was too small, so there was lacquer under where the bridge block would go, so they couldn't glue wood to lacquer, so they screwed it down. I've subsequently removed the excess varnish and glued the bridge down properly, and now this wonderfully well-made guitar is no longer contaminated with screws.
So, on the extremely, utterly remote off-chance that anyone else wants to know, here's the scoop :)