Aqua Vitae Rosettes

[BessAgritianin]

In the upper right corner  there is another alchemical symbol:
   

However the symbol could be interpreted as vitriol, soap stone , iron sulphate or any other compound/process that the aurhor had had in mind.

I think that a theme in this blog named "Alchemy/Pharmacy" may be created, where this material and  some valuable conclusions could be gathered.
 (There are further observations of mine about the alchemical character of other foils, but since there is no place to post them- no use to be lost in the nowhere.)

Note also the two suns in the other two corners- which may represent :
 A. Gold
 B. Thermal process