Terra Ceramics mustard pot

Obviously only one sized sticker used on all Terra Ceramics. Any idea about the FV initials underneath?

Thanks dollcrown
signal red worked there, so she may know who those initials represent .....

Many thanks to signal red who informed me that the marks on the base are put there by the Fettler.  If the fettling wasn't good, they would know who did it and they would have to fix it.
This resulted in the quality of Terra Ceramics being of a very high standard.

Thanks Ev. Had to google to see what a fettler was.