Brown And White Ewer Vase

[novice11]

i have recently inherited a large brown and white ceramic ewer type jug.the overall colour is cream with a apple tree branch running round the bottom painted in a pale brown colour. the vase is highly glazed. on the bottom of the ewer is the following 'DIPOSE RN1920' also there is a letter stamped in the middle of diamond shape think it could be a B plus a crown stamped on the top of the diamond shape any help trying to identify this pottery would be appreiciated thanks Janet

[rccatnap]

Without a photograph it's difficult to be accurate.
I suggest you take it to an auction house or antique pottery/china dealer. They should be able to tell you quite quickly, if not, they'll surely be able to direct you to a suitable expert. Good luck.