There was a single Slayer (DW29) in the 1988 MM10 Marauder Dwarf range. This was followed by 2 lots of specialist Slayers. The Troll Slayers were released in the January 1990 White Dwarf ad, and the Giant Slayers in the April 1990 one. At some point MM16-10 was released with a closed hand.
Painter:
Andy Mott / Andrew Dunham / Orclord
MM16-10 with both the open and closed hand versions.