Welcome stampie! Hope you enjoy this site.
Quote from Evert Klaseboer's site:
"Queen Victoria, inscription 'THE STAMP ACT 1864', I've seen the values: 1 p green on yellow, 3 p orange on yellow, 6 p brown on yellow, 1 Sh lilac, 2 Sh red and 50 Pounds violet. Many more values exist."
http://catalogue.klaseboer.com/vol1...s_afrca2.htmfor what it's worth, it doesn't seem to be worth much - a used 6d was sold with a used 4 shilling stamp earlier this year for R41 (ie about £4 GBP, $6 US):
http://www.bidorbuy.co.za/item/6965..._S_used.htmlBy the way, the best place to put this type of query is in the general forum - especially effective if you have a very clear title eg "help with Cape of Good Hope 1864 Stamp Act 6d" - as lots of people check the forum every day.