The 811 flat car was introduced in 1926 and cataloged through 1940. The 811 was made in maroon with gold lettering and in aluminum with black lettering.
The maroon cars have brass or nickel (harder to find) stakes. The aluminum cars have nickel trim and can have either latch or box couplers. Until 1934 the flatcar came with a solid load of lumber; after 1934 the flat car came with 8 pieces of cut lumber.
The Lionel 2811 flatcar is the same car with remote control couplers.