David and Mike
The inverted apostrophe reference rang a bell in the dimness! Both my LH examples (group to Sgt. Dale and single to Tpr. Consterdine) have the inverted apostrophe. Interestingly, so does a single to Lovat's Scouts; as well as the same feature in the naming on the KSA to a QSA/KSA pair (KSA naming to Lovat's Scouts I.Y.).
I wonder if the "slip up" was due to the proper apostrophe wearing out (it/they would have had a lot of use with the naming of colonial QSAs) and a block with an inverted comma substituted in the naming machine. Probably no medal recipient ever noticed, anyway!