It is garaged in a well insulated garage attached to the house with the central heating boiler and pipes in, so as normal garages go, it's in a fairly warm and dry enviroment.
Interestingly, it has been under sheets in a UK barn for the last 17 years and the patina is exactly the same as when it came from Portugal. It was discovered and rescued from a cobbled street and brought back to the UK, then just stored until now, never driven, never registered. I've seen photo's of when it was discovered and it really hasn't changed or decayed at all.
It will only ever get infrequent use and only in the dry. I won't even be washing it with water - just wiping away road film and dust with a suitable wax/polish/spray - it's not like I'm worried about scratching the paint finish, as there's already plenty of dings and dents and scrapes on the wings etc that will need careful dollying. But I'll be leaving them unfinished and not refinnishing them as they just add to the history, charactar and originality of the car. There are more than enogh concourse restored examples out there - for which this is the perfect candidate, but for the time being, I have no intention to destroy it's virginity.
Once I've been through it, got it back on the road and MOT'd etc, I'll clean all the wheel arches off, remove all the dry mud, dust and light surface corrosion with a stiff brush, then choose a decent protection product and just cake it all over the underside, inner panels, bulkheads, inner floorpans etc - something like Dinitrol 3125, or waxoyl etc. I'm not going to underseal it, or put any other 'permanent' coating on, as this will hide the natural condition, but just something to keep the moisture out that can be cleaned off with white spirit etc in the future should plans change.
As for the external patina - I'll find a quality wax/sealent such as autoglym extra gloss protection or similar and just keep aplying it and applying it until it is well and truely drenched / soaked with it.
It's lasted well this far, so as long as it is kept dry, I'm sure it'll be fine.
I can supply...
25/36hp Crank-Flywheel shims - 3 sizes
NOS king pin thrust & fibre washers - all sizes
Cloth braided nitrile fuel hose safe for modern fuels
PM me for details...