India 1854 - One Anna postage stamp variety identification

Just wanted to note down this pointers I found sometime back, which might be of good to help to someone who is working on collecting 1854 1 anna lithograph postage stamps of British India

Identification of the 3 dies of 1854-55 British India 1A QV red lithographs

1854 India - One Anna - Die 1

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Die I

1. Chignon is always separated from the hair strands of the head. (most specific characteristics of die I) 
2. A small blob of red is projected into the second top lobe of the chignon in its left side, from the hair strands. (another consistent feature of die I in both new and worn out stages)
3. The second top lobe and the bottom two lobes of the chignon are very much blank.
4. INDIA and HALF ANNA letterings are thinest as well as smallest among the 3 dies. There is sufficient distance between the letters and the upper and lower lines of the inscription labels.
5. The upper two corner crosses are smallest among the 3 dies.
6. Eye and nostril are not as firm as die III.
7. Bustline is not sharply pointed as die III.

Die II
1. Chignon is connected to the hair strands of the head and this joint is visible as a curved white line.
2. All lobes of the chignon has curved lines, less in number than die III but more than die I.
3. The letterings INDIA and ONE ANNA are thickest among the 3 dies.
4. The upper two corner crosses are greater in size than die I.
5. Eye, nostril and bustline are same as die I.

Die II (worn out stage)
1. Curved lines within the chignon are faded and the chignon becomes blank and resembles as the chignon of die I.
The worn out die II can be distinguished from die I by the absence of the red blob projected inside the second top lobe of the chignon in die II.
2. Eyebrow is often shortened.

All other features of worn out die II are same as die II early state.

1. The right bustline (with respect to the head itself) is almost straight and sharply pointed at the base. (most distinguishable feature of die III)
2. The pica (letter height size) of INDIA and ONE ANNA is largest among the 3 dies.
The letters are often found to touch the upper and lower lines of each inscription labels. (confirmatory feature of die III to distinguish from die II)
3. Chignon is most thickly filled with curved lines, among the 3 dies. 
4. The joint of the chignon and the hair strands is same as die II.
5. Eye and nostril are most sharply printed among the 3 dies.
6. The cruciform marks in upper two corners are largest among the 3 dies.

Do share, if you have good examples and can be good reference for study.