This guy is part number 70155/1. He was released in July 1995 (announced in White Dwarf 187) and is a Jes Goodwin sculpt.
1994 sculpt. His right arm was the usual storm bolter 0441/4 and the left was the Crozius Arcanum 70155/2.
This guy is designed by Jes Goodwin and is marked as Codicier 2 in the catalogue, part number 70083/1.
Marked as 1994, near as I can make out.
Paints used:
Undercoat: Vallejo Mecha Black
Base coat: Scale75 Artist Cobalt Blue, blending up to Primary Blue, shade of Cobalt Blue
Black: Scale75 Artist Black, highlight of Violet Grey
Silver: Scale75 Black Metal
Bone/Parchment: Scale75 Buff, blended up to Off White and Vanilla White, shade of Burnt Sienna Umber
Purple: Dark Violet, with Purple blended to a mix of Purple and Violet Grey, on the oval thing on the axe a highlight of Art White for the reflection
Hot metal effect: Art White followed by Primary Yellow, blended to Golden Flesh, blended to Orange, blended to Primary Red, blended to Crimson. Edge highlighting done with a mix of 50:50 Burnt Sienna and Burnt Sienna Umber, with corners done in Art Black.