To all: Thanks!
To stamperix: Second stamp on the cup was part of my second lot - old Schaubek album with used stamps. It went for $2200.
To stallzer: Long story short > It was my grandfather's collection. Collection was well sorted # after #... So I just found the stamp where it should be

. After few years of study other albums I came back to 389, found this thread, applied for the certificate and successfully sold it last week. My grandfather didn't speak english. He would never be able to get the certificate. Where he found this stamp and how??? That is something what I am also curious to know. There is no way how to ask him.