Here is an analysis of the single clasp, single QSAs that have passed through DNW's hands. The plot shows the clasps in descending order.
23 of the 26 QSA clasps (25 if you omit Tugela Heights) are included. Omitted are Paardeberg, Driefonten and Diamond Hill.
Cape Colony - 244
Relief of Ladysmith - 116
Natal - 115
Defence of Ladysmith - 100
Transvaal - 68
Defence of Kimberley - 49
South Africa 1902 - 37
Talana - 28
Belmont - 24
Defence of Mafeking - 24
Rhodesia - 22
Relief of Kimberley - 12
Modder River - 11
Elandslaagte - 10
South Africa 1901 - 9
Orange Free State - 7
Balfast - 6
Laing's Nek - 6
Relief of Mafeking - 5
Wepener - 2
Wittebergen - 2
Johannesburg - 1
Tugela Heights - 1
Not all of the QSAs are 'correct'. For example, the 2 Wepener QSAs are the same medal to Finlayson who earned QSA (4). Duplicates are included. The Tugela Heights recipient (2386 Pte. F. McCabe, S. Lanc. Regt.) earned QSA (4) too.