Hello,
With regards to:
1) Sudan 50 Piastres / Qirsh, KM#123 and KM#123a,
comments on the current pages are incomplete, and some are incorrect.
Non-Magnetic: https://en.numista.com/catalogue/pieces7465.html
Magnetic: https://en.numista.com/catalogue/pieces77319.html
* Magnetic:
I own 1 of each type:
1- Curved top stroke of 6
2- Straight top stroke of 6
- My observations are as follows (in addition to the current noted differences):
1- fine reeding (Curved top stroke of 6)
2- coarser reeding (Straight top stroke of 6)
* Non-Magnetic:
2 lines exist with no comments at all at the year lines.
The pic added in the comments section by Emad is incorrect. It could be used actually to show the different edges of the Magnetic type
(I believe he was rather comparing the non-magnetic coin (coarser reeding by default) to the fine reeding type of magnetic; which is rather inaccurate)
- My observations are as follows:
I own 4 coins. All of them have "Straight top stroke of 6"
However, 3 of them have coarser reeding; and 1 has a smooth edge!
It's noteworthy that the smooth edge coin has a little worn surface; so the smooth edge could be a result of wearing
2) 20 Qirsh KM#124;
-Non-Magnetic: https://en.numista.com/catalogue/pieces7464.html
-Magnetic: https://en.numista.com/catalogue/pieces77318.html
I own 1 of each type hence I can't draw conclusions, however my observations match somehow with the 50 Qirsh coin:
- Non-Magnetic: Straight top stroke of 6; coarser reeding (a little worn out including half of the edge surprisingly)
- Magnetic: Curved top stroke of 6; fine reeding
3) 10 Qirsh KM#122
https://en.numista.com/catalogue/pieces7463.html
I checked my 34 coins and there is no noticeable difference
4) 1 Pound KM#127
https://en.numista.com/catalogue/pieces38747.html
I checked my 7 coins and noticed that:
3 coins, edge readable when obverse is on top
4 coins, edge readable when reverse is on top
Also, when having each set on top of each other with lettering on edge matching, the coin rotation doesn't match; so edge lettering position is not the same
Let me know your thoughts :)