I'll take a shot at value:

I'm thinking $595 may be the ceiling on this one, no more than $650 if someone really has to have a Long Branch.
Really pristine LB's tend to bring big dollars here in the US. I saw a beautiful 1950 LB go for $1100 at a recent auction. Ovidio's example is a beauty of rifle.
This one looks likes it's been sanded (stock markings barely visible). As browningautorifleicon pointed out, the buttplate should be alloy, so it may have been replaced, but who knows when and where.
The two biggest points that turn me off are the paint, and the importers mark stamped so close to the Long Branch factory mark. I really cant tell if that's suncorite paint or barbeque paint. Early 90's imports had much more discreet markings near the muzzle or near the charger bridge, right hand side.
The #3 bolthead wouldn't bother me too much. I have an early No4 faz (with mag cutoff slot) fitted with a #3 head. The rifle is very beat and bears the marks of very rough handling. I shoot it occasionally (maybe once a year) with low-power reloads.
At the end of the day, it's your decision. Do you want it as a shooter, or just to have an LB example? How bad you want it will determine what you will pay for it. But honestly, IMHO, I think its a $550 dollar rifle. There are others out there....