Possible, but I wonder why they didn't just stick a Bad Ass bridge on it. Very fine routing job, from the look of it. I would be curious to know if the plate was machined out of a solid block of brass, like it looks like. Alembic seems to be set up to work brass more than steel.
Takeing a magnet to it would tell.
It would add a lot of weight to a bass already known to be heavy.