Very Old Horror Movie 60’s or before

Starts with man has machine that turns anything to gold. Throws gold coin in machine and Creature emerges covered in Coins. Creature proceeds on a rampage of killing and taking identities of those it slays. It has a mask that copies the slain persons face which Creature then uses to have that persons’ face. Does this several times. Men and women. One victim was a nurse. Detectives finally catch up to Creature and kill it. It is discovered (at end of film) Creature was pregnant.