Happy Friday.
Welcome to today’s South African stamp project. 
I culled the set of stamps on this page from a thousand or so that I had removed from envelope paper clippings.
(A lot of work, done earlier this week: dunk them in water, carefully separate the stamp from the paper, dry on paper towel, and press under a stack of books).
My Scott stamp catalogue confirmed that these stamps are all worth hardly-anything.
One exception: there is a Standardised Mail stamp (the first one on the page), with the fine black text double-printed, that is listed for US$136. (I found no such stamp in the ones I had).
These are all multicolored, and my catalog does not list any shaded varieties, even though it seems to me it could: say—
7c bright colors and 7c dull colors;
21c olive-green and 21c blue-green;
35c blue-gray and 35c gray;
R1 brownish-green and R1 green.
1988-1993 Fifth Definitive Issue (Succulents), South Africa
Issued Sept. 1, 1988
Perf. 14×14¼ |Design: Hein Botha |Phosphorized paper| Lithography |No Watermark
903 Standardised Mail (45c) (’93) Multicolored Stapelia grandiflora
782 1c Multicolored Huernia zebrina
783 2c Multicolored Euphorbia symmetrica
784 5c Multicolored Lithops dorotheae
785 7c Multicolored Gibbaeum nebrownii
786 10c Multicolored Didymaotus lapidiformis
787 16c Multicolored Vanheerdea divergens
809 18c (’89) Multicolored Faucaria tigrine
788 20c Multicolored Conophytum mundum
833 21c (’90) Multicolored Gasteria armstrongii
789 25c Multicolored Cheiridopsis peculiaris
790 30c Multicolored Tavaresia barklyi
791 35c Multicolored Dinteranthus wilmotianus
792 40c Multicolored Frithia pulchra
793 50c Multicolored Lapidaria margaretae
794 90c Multicolored Dioscorea elephantipes
795 R1 Multicolored Trichocaulon cactiforme
796 R2 Multicolored Crassula columnaris
832 R5 (’90) Multicolored Anacampseros albissima
Note: this set includes a 1c, 2c, 5c and 10c coil stamp, which is not listed above. Interestingly, of all the hundreds of mail pieces I had, none had a coil stamp on. (Coil stamps are sold in a long strip that is rolled into a coil).
[Source: Stampworld.com]