The stamps were printed with three distinct spacings
A part reconstruction of a sheet of 12 from the first printing. Later printings were of 24, set closer together, hence the three distinct spacings that are found. The first printing of about 206,000 ran out in two months late 1854.
1854 4 annas, wide setting, pair with MS cancellation
The famous ‘inverted head’ known in a few copies of the first printing