Two Bob Meaning

(idiomatic, Britain, Australia) A trivially small value; often used attributively.

Example: 1999, Barry Maitland, The Chalon Heads: A Kathy and Brock Mystery, page 181,
  Less flashy in its post-modernism than the MI6 building, more sober in its brick-framed glass curtain walling, Sally Malone would have pointed out that this was the two-bob side of the block, as against the half-crown riverbank site of the other building.
1975 September 4, Monitor: Nova Honda brightens the night sky, New Scientist, page 515,
  Judging from the spectrum and the brightness Dr Stickland “wouldn′t give two bob either way”.