Description	A silver plate insert lemon juicer. There is a bakelite rod to remove central fruit to allow the juice to flow freely.
Material	E.P.N.S. and Plastic (probably bakelite)
Diameter	EPNS 8mm , Plastic 6mm
Length	EPNS 28mm , Plastic 11mm
Height	EPNS 111mm , Plastic 112mm, Combined 126mm
Weight	EPNS 15g + Plastic 6g = 21g
Maker	Inscribed "E.P.N.S. MADE IN ENGLAND"
Mary Walker No.
Notes	Patented by JULIEN KOFF in England - Application March 26, 1930 & finalised June 11, 1931. This is inserted through the fruit (probably lemons at the dinner table) and the centre of the fruit is pushed out using the plastic insert. Then the fruit is squeezed to extract the juice. I have another similar to this and I also have one made from Sterling Silver.

Parts of E.P.N.S juicer with bakelite rod

Marks on E.P.N.S juicer with bakelite rod

An extract from the Julien Koff patent