Watch List notes:

Foreign Coins, George VI, silver crowns, 1948 (72), "special strikings", mint state (72)
Wrapped in brown paper. It has the inked inscription, "72 Specially struck S.A. crowns. Each one handled separately from press and enveloped at once."
The W. V. R [Roy] Baldwin Collection of Coins of Southern Africa (1500-2000 GBP)