Mail from Great Britain with Sherlock Holmes stamps on the outside, and South African stamps inside, arrived yesterday.
I am hounding down the last ones I need to complete my Union of South Africa (1910-1961) collection.
Issued 1993, Oct. 12
Perf. 14×14½ Phosphorized paper
Colors: blue, greenish yellow, magenta, black & gold
1785 1112 24p The Hound of the Baskervilles
1786 1113 24p The Six Napoleons
[Source: Stanley Gibbons Stamp Catalogue Part I British Commonwealth Volume 1]