In order to ascertain for sure, you need some sharply focused pictures, with reduced glare. In the other thread, the revolver appears to have a side plate screw hole which has some slight dishing to it. The edges of the revolver also have some softness which usually indicates a refinish.
The finish on the Highway Patrolman revolvers owes its looks to the bare metal finishing, and not the bluing or nickel plating. It was finished to a lesser degree than the Model 27, keeping the cost down. The Highway Patrolman also didn't have the checkered top strap. That would be a clear indicator.
There's also the possibility of a mismarked revolver.