Originally Posted by R.R.:
I have not seen any of the 3rdRail engines in person. Most of what you see in museums are fairly glossy paint jobs. How about the Third Rail stuff?
When brand new or freshly repainted, prototype diesel (and steam too!) locomotives were indeed very shiny, just like a new automobile. The shine wore off rather quickly, given the harsh detergent washes they got, grit and dirt from the roadbed when running and the constant effect of the sun. Nobody Simonized or polished their locos every few months like people did with their cars at one time.
Some roads like B&O had a regular schedule for repainting their locomotives. B&O repainted their steam and diesel power every 5 years. So their power always looked reasonably fresh, until the last decade of its existance.
Restorations are very shiny, just like when a loco or car in question was brand new. If kept under cover and out of the weather with maybe occaisional use at a museum, that shine can last for quite a while. And more so now with modern paints than it could have with paints of the 1940s and 1950s.
Modelers usually prefer a semi-gloss or egg-shell finish on locomotives and passenger cars. It seems to better replicate what the prototype looked like after several months of service. Third Rail's locos and Golden Gate Depot's cars try to capture this look rather than that of a high shine.