Issue dates

[Beyers Herbst 10]

Maybe some of my learned friends can help with this query please. I'm trying to find out on which dates these sheets were issued:

 

Rugby World Cup Tournament 1995 (Miniature Sheet)

2010 FIFA World Cup South Africa (Various Round Full Sheet)

3rd Joint SAPOA Issue 2010 FIFA World Cup (African Countries Full Sheet)

3rd Joint SAPOA Issue 2010 FIFA World Cup (South Africa Full Sheet)

 

They are not listed in the new SACC. Is there an easy reference website for this type of query? Any help would be appreciated, thanks.

 

Beyers