Postcard - ‘COOK’.
'COOK', as the women cook fish (seen in the tub in the foreground, is instruction for the alchemist when he wants to make the lead white. Michael Maier (1568-1622) describes phases from the alchemical process in Atalanta fugiens, 1618.
There is a brief explanation of the image on the reverse of the card.
Size: 105x150 mm
© EFM/Bibliotheca Philosophica Hermetica Collection