I certainly know of two editions - the one printed during the siege and the Townshend (Cape Town) 1900 souvenir reprint.
Dr R.M. Pelteret identifies four editions, details of which can be seen in his 2008 essay
HERE
Below are a few things to look out for when ascertaining whether a copy is a first "siege" printing or not. In all cases I have shown the first printing above the later souvenir edition. The reprint was "wire-stitched" (stapled) and bound.
It is worth noting that No. 56 was never printed, and Nos. 45 & 142 were printed after the lifting of the siege. So a set that includes Nos. 45 & 142 is likely to be the later souvenir edition.
The latter edition had a Preface, but some unscrupulous individuals have broken these sets up and are selling the individual sheets as "originals".
I notice that the copy posted by Berenice has further differences, perhaps suggesting that there was more than one siege printing. However, I believe these discrepancies are simply a product of the work of
"Blackburn Times" typesetters.
The following advertisement for the souvenir "wire-stitched" edition, to be available in July 1900 for 30/- a set, suggests that reprints had already been supplied during or very shortly after the siege:
Mafeking Mail, May 30th, 1900.
Complete Sets of the "Mafeking Mail" Siege Slips.
We cannot supply any more sets until some paper comes to hand, as several numbers are quite out of print. When we obtain a fresh supply, similar to that we were forced to use during the Siege, we shall be able to make up nearly another hundred sets. For these we will book orders for delivery about July next. Carriage free in Great Britain or the Colonies, price 30/- cash with order. The set includes Nos. 1 to 147, and will be wire-stitched together".
When published, the souvenir reprint included Nos. 1 to 152 (without No. 56, which was never printed). I have seen later numbers than this (up to 155, 4th June), showing that the Mafeking Mail continued to be printed some time after the lifting of the siege.
The "siege printing" reproduced below belonged to 5385 Private William Henry YOUNG, 1st Bn. Grenadier Guards, who acted as servant to Major Lord E.H. Cecil during the siege.
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