handmade in Norway vintage pottery tray w/ green malachite glaze, KBF or Elle?

Vintage pottery tray, 12 3/4" across the handles. This is numbered and hand signed Hand Made in Norway.

The marking / numbering on the back looks like Elle Keramikk to me, but I don't believe I've ever found any of their pieces without a sgraffito design.

This design looks like Kare Berven Fjeldsaa to me, but I never find KBF trays! If you know this design line or artist, please email me, I'd love to know for sure.