This small porringer is high (total): 3,5 cm, lenght: 8,1 cm, diameter bowl: 5 cm. Weight: only 18 gramms. Maybe a miniature?
There is the mark RP. I don´t know that mark. Looks like a London mark to me. The initials looks old to me. There is another mark ZII at the bottom. That is a (modern) Dutch taxmark for re-entering the market.
Regards,
Zilverik
![Image](http://i43.tinypic.com/29xdvsl.jpg)
![Image](http://i44.tinypic.com/447wh.jpg)