Lionel called this the Park Lamp Post.
Colors in pictures are in order of manufacture from left to right Dark or #10 gray), mohave, pea green, copper bronze, and 45N or accessory green. 45N green was also made after the war. Copper bronze supposedly only came on the 922 lamp terrace, but you can find them loose.
There is also an aluminum version from about 1939. I have one, but it's not come out of the moving boxes yet. The TCA book lists two versions of the gray, but all mine are the same color.
