I was wondering why was Hela drawn with only one hand in Journey into Mystery 638? and yet in later issues like Journey into mystery 645 she is drawn with two hands does anyone know why?

(Late response, but in case anyone else stumbles by).

Hela's hand is cut off in Thor #611 - The Fine Print, Part 1. Curiously, from the way it is drawn it seems (at least to me) to be her Ieft hand, rather than the right hand which is shown missing in Journey into Mystery. Not a lot of books published after that picked up on this, as Hela is shown with her hand plenty of times in later issues, but apparently the artists for those Journey into Mystery issues did think it worthwhile to include - or rather leave it out. Her hand (her left hand) was restored in Journey into Mystery #641.