Thanks for sharing this.
I'm intrigued by the 1862 dates in Isfila. Thanks for pointing this out.
If I look at my catalogues:
SG gives 1st Jan 1863 as the first issue date.
Michel gives 13th Jan 1863 for the first issue date.
This suggests that maybe SG has used an old style date and Michel the new style equivalent for the same date.
Michel and SG both say that the first printing was made in 1862 but not issued until 1864.
In the meantime the second printing was issued in January 1863.
The third printing was issued in either December 1863 (Michel) or 1864 (SG).
Printing I consisted of the 2 and 5 piastre stamps on thick paper = SG 7-8
Printing II consisted of the 20 paras, and 1, 2 and 5 piastre stamps on thin paper = SG 1-4
Printing III consisted of the 20 paras and 1 piastre stamps on thick paper = SG 5-6.
I've simplified the above to ignore shades and other varieties.
Does Isfila give us more information on all this?
By the way my Pulko catalogue simply gives 1st January 1863 as the issue date for all these stamps!