Rob, No phosphate parts on mine. Very, very good condition, but just weak on the bluing up the front grip. My "F" was captured near an American POW camp in Germany. The N.Y. vet that sold it to me just before going into a retirement home, said he ran into a police officer with a sully tone near Schweinfurt. (Just checked my notes on that town) They had just seen the poor treatment provided for our POWs. He said he took no lip from the cop and grabed his gun from him. It is a nice story as it places the weapon in action late in the war, when that camp was set free. Sounds like you have a beautiful example (or Two). Guess mine was not on that same rail car. Glad to know someone with a gun so close to my numbered example. And yes, stamped trigger to answer your question.
Regards, Jim