RSA - SACC 313 - Hendrik Verwoerd Dam with varieties - M** - Please see below

A few varieties -  Middle stamp - "Meteorite falling",  Shift of colors - scan 2 : stamps on the left pair brown soil shifted into the "5" leaving a misvormed "5".  

Green color shifted up on the right stamp - moving into the border.  

Grey-blue color on the left stamp - just a narrow window :on left side of the building against the brown hill.  Stamp on the right got a full window.  Also on the dam wall - the stamp on the left got a double door and the stamp on the right got a "open" door.

The Blue color of the water, on the stamp on the right - it moved into the stamp.  The stamps on the left moved out of the stamp.

The printing on the bottom of the stamped also shifted.  The big blue block in the left corner of the stamps - on the right stamp shifted upwards.  Scan 3.

Blue color shifted in moved onto the dam wall and leaving a larger white block on the opposite of the dam.