However, the printing
was going on inside a jail, and the inmates seem to have taken a fiendish delight in making as much of a mess of the business as they could. Spelling errors abound on the two low values, the ¼ and ½ Anna stamps:
If you look more closely at the first (¼ Anna) sheet, you'll see that the '¼' in the second stamp on Row 1 is inverted, and the full stop is missing after 'STATE' in the first stamp on Row 3.
Double prints are common. Here is a doubly printed sheet:

Things were even messier with the ½ Anna. If you look at the sheet above, you'll see an extra large 'J' in Jaipur at stamp 2 Row 1, and the missing stop after 'STATE' again.
There was also another setting of the ½ Anna, which produced two more errors - in the sheet of six:

1/3 for ½ at bottom right, and 1½ for ½ at bottom left
And of course, these can also be found printed double.
Then there are the shades to collect: Gibbons lists the ¼ Anna in green and greenish-yellow, the ½ Anna in ultramarine and grey-blue, and the 2 Anna in greyish green and deep green. The ½ Anna grey-blue is the most expensive, at £3.25, followed by the green ¼ Anna and the greyish-green 2 Anna at £2.75 each; on the other hand, the ¼ Anna greenish yellow and the ½ Anna ultramarine are 30p each.