Nice tureen!!!
The imprint, Pinder Bourne & Company, was a a pottery maker and most likely the maker of your piece in Staffordshire, and operated at Nile Street, Burslem, c.1862-82.
BUT if I am reading the registration marks correctly...they are for two different dates/years! One is for 1866 (imprint) and one is for 1868 (blue).
I would recommend a "hands-on" inspection/valuation.