I can only echo what Dave has said here Des. This is craftsmanship of the highest order. You've joined a very exclusive club, of which there can only be a few members, with this superb example of engineering and master model building.
My suggestion would be to store the model in one of those clear plastic storage containers that come in various sizes. It would ensure a dust free environment, and it would prevent the possibility of any damage occurring to it. I use stackable 'Sterilite' storage containers from Walmart for my aircraft models.
Cheers,
Chris