In what year did the museum that preserved South Australian Railways 409 steam locomotive first open its doors?
South Australian Railways 400 class:  Two have been preserved, 402 at the Zig Zag Railway, Lithgow and 409 at the National Railway Museum, Port Adelaide. National Railway Museum, Port Adelaide:  First opening its doors in 1970, the Museum moved to its larger and current premises in 1988.
1970