Last acquisition in 2015 -- 900

[alvin]

Put it back.

Heard story from another forum -- back in 1950s and 1960s, there was a nursery rhymes in Beijing, saying

"bicycle has large chain case,
broomhandle has a side plate"

-- A type of East Germany made bicycle at that time had a cased chain box which must be very noticeable. And, the "broomhandle" referred in rhymes must be Astra 900.