Mystery vase PZH? - circa mid 1920's early 1930's

"Orange Sunburst"

9.0cm H x 5.6cm D

This small vase is a mystery! It has all the traits of being made by Plateelbakkerij Zuid-Holland. The shape is very PZH. See the close up of the the rim and one can see the ochre/gold coloured band - this ochre/gold colour banding was used by PZH. The black dots appear to have been put on by a stencil and maybe sprayed on. The number 17 does not correspond to a PZH model but that does not mean anything if the piece was possibly some sort of trial decor - we really don't know. Any thoughts would be appreciated!