Please Help ID: Stunning Hamada - Leach Style Pot Dark Tenmoku Glaze w/Abstract Resist.

Good Afternoon,
I need some help identifying this exquisite piece of pottery. Exterior is decorated in a very thick dark brownish-black high gloss Tenmoku glaze with wax resist abstract brush strokes with a matte Russet colored underglaze. It's very heavy thrown stoneware in the shape of a bottle with a slightly flared rim. The bottom is marked with incised letters that appear to read "F.E.F.". It stands 7" tall and is 6" wide. It's absolutely stunning in person. Any help with an ID would be greatly appreciated. Thanks!!!