I don't know when Hibberd arrived at his findings but assume that it was a number of years ago?
When looking at his list I am at variance with him when it comes to the rarity (or paucity) of e.g the Relief of Ladysmith clasp. This extends to the SA 1901 and 1902 as well as the clasp to the OFS, all of which I find to be reasonably common.
Is this the experience of other collectors on the Forum as well?
I think Hibberd's work was undertaken about half a century ago. His famous table and accounts for the single clasp QSAs were published over a number of issues in the Spink monthly Coin and Medal magazine. I think these were from 1961 but I need to check that date.
As such, the research much have been a best guess at the time.
We are much more able these days to generate better estimates given the information now available.
I will check this weekend on the definitions he gave for each of his terms.
This is not something often seen as it is an impossible complete entitlement. The QSA is being sold by DNW next week. The recipient 2386 Pte. F. McCabe, S. Lanc. Regt. is additionally entitled to OFS, Tr, RoL and LN
This 'impossible single entitlement' has come up before and I will try to find the thread later. It concerns the issue error made in respect of Imperial Light Horse casualties at the Battle of Colenso, who were issued their QSA's early, apparently following the intervention of Winston Churchill on behalf of one of their number (Tpr Fred A Freshney, ILH). Justin subsequently located a memorial to Freshney and I will look for that thread as well.
Finding a genuine (although issued in error) single clasp 'Tugela Heights' QSA is on my long, and never diminishing, wish list.