I was given a roll by a dedicated Union medal collector which he got from the TNA - I don't have the exact reference.
I have a QSA/Union pair to Archibald James Goodman Cramer (ex Trpr 2090 SAC). Cramer's name is not my list nor the one you have published. An AJ Cramer worked for the Public Prosecutor's office in Johannesburg from 1905 to 1916 (at least). A "Mr Cramer" prosecuted cases against Indians contravening Transvaal immigration laws, one MK Gandhi appeared for the defense. With the medals came a copy of a letter from PM Louis Botha dated 1915 praising Cramer for his work in an unidentified trial - no doubt he was a lawyer, whether there was another "A Cramer" who battled with Gandhi is yet to be established. Cramer died in an aircrash near Kokstad, KZN in 1951.
I haven't done further research for a number of years, maybe it is time to re-visit the Gandhi connection.
Cramer's pair raises the question that the Union roll is incomplete - given the high value of single Union medals - why pair it with a humble QSA to the SAC, the value of the Union medal is not enhanced.