Good Afternoon,
I have a South Africa stamp South Africa 1935 SG 65a SC 68 with numerous issues. I'm aware of the "Cleft Skull" variety but there is more going on here than just that...Could be something and could be nothing. Viewer's choice.
1 - Vertical black line through left stamp "SILVER"
2 - Damaged or broken "L" in right stamp SILWER
3 - Cleft Skull variety
4 - Re-entry / Double Transfer DT of bottom right value 1/2d
Please stay on topic and comment about this stamp and this stamp only.
FULL STAMP

LEFT STAMP - BLACK LINE THROUGH SILVER

RIGHT STAMP - CLEFT SKULL

RIGHT STAMP - VALUE RE-ENTRY / DOUBLE TRANSFER DT

RIGHT STAMP - BROKEN OR DAMAGED "L" IN SILWER

If my terminology is wrong - I will edit the post.