I have owned 3 +4s including a 1951 Flat Rad, so I have some experience.
The engine is certainly a 2088cc Standard Vanguard , which would be correct for a 1951 to 1953/4 (?) car.
My flat rad was a roadster, not a DHC so I don't know so much about the bodywork.
Is all the running gear complete , the gear lever looks right for a Moss Box (which will be a wide ratio 4 speed) , is the back axle there and a Salisbury 3HA?
The rear springs feed through trunnions on the crossmember that the spare wheels are mounted upon. These were sometimes converted to the later type with shackles at both ends.
A new dashboard is no problem , and you have almost a complete set of the instruments which are very difficult to source. There are no photos of the seats or the interior, even if not these parts are relatively easy to find.
In fact it looks like you have an almost complete car there , with only a few small bits and pieces missing (wipers, wiring loom, headlights, taillights, etc and no doubt many others that I cannot see from the pictures) Most of these would be available (but you might have to hunt pretty hard), or could be made for you by craftsmen in the Uk , but I know nothing about the local scene in Portugal
I cannot date it accurately without some more information.
As to price I would be totally out of order to even hazard a guess, especially in Portugal (or Holland)
It would be a tremendous projected one that will repay you handsomely with a great car , make no mistake , this is quite a find (in my opinion)
Good luck in securing it.
