Call me by your number - 01c Black, red and blue pennies

From 1858 on, till 1869, new plates were issued, with red pennies, and blue 2 pence stamps.

Now the four corners have letters BA-AB for row A, column B.
There are 240 stamps in each plate, going from AA to TL.

For the 1 penny red:

Row R (18), stamp B (2)

Plate numbers are now mentioned in the left and right border decoration of the stamp.

The 1 penny red and perforated with 4 letters (one in each corner), had an extended life span.
They were printed from 1858 till 1879. Therefore, many plates were used, re-used, and retouched during those many years.

They started with plates 69 and 70, but due to many defects on the plate, those stamps were never printed. Same goes for plates 75, 126 and 128 - plate 77 was also rejected, but very few of the printed stamps did get into ciruclation and are therefore extremely rare.
A "77" is most likely a "117" or a "177",  or a completely forged stamp.

A much more challanging collection, is the compilation of a red penny (perforated) of each plate.
The total amount of issued, perforated red pennies, is 13,434,000,000 (55,975,000 sheets). 
So the amount of stamps is not the main problem.

But, first of all, plate numbers are not always very clearly printed, and greasy cancels will not make your search easier either. Plate numbers exist from plate 71 till plate 225.

Plate 225

With some help from the computer, the colours of the image can be altered, so that the contrast becomes more useful to determinate the plate number.
The stamp above leads me to plate 225 (or the last issued plate).

Two albums for possible collections :

plate numbers 1p

plate reconstruction 1p

For the 2 pence blue:

Row H (8), stamp F (6)

Plate numbers are now again in the left and right border decoration of the stamp.

Plate 8

The stamp above is from plate 8, the second plate used to print the 2 penny of this new series.
Plates 7, 8, 9, 12, 13, 14 and 15 can be found.

These blue pence stamps are still affordable, and although 'old', they were emitted in such high quantities, about 196,824,000 (820,100 sheets), that they still can be found in (older) albums.

A full collection (240 of each plate), requires 1680 stamps.
More common is to compile a mixed sheet, with all plate positions.

However, feel free to collect them both : a reconstructed plate with all letter variations, and / or even more specific with stamps  .

Two albums for possible collections :

plate numbers 2p

plate reconstruction 2p

to be continued...