Wedgwood Age... Can you help?

Hi there,
I wonder if you could help with the identification of a piece of stock that I own?

As far as I can make out from the mark on the base it is early Wedgwood, but I'm not to sure how to work out the date code. I've checked in some reference books, but find it quite difficult to work out the letter codes!

Would it be possible if anybody can fill me in with this information and give a valuation?
I have attached some pictures for your reference.

Many thanks in advance.

Nick
www.intovintage.co.uk

 

Welcome to Antiquers IntoVingage!

 

The “Z” would be 1871 unless there is an “England” mark, which would make it 1897.
It’s a water bottle that originally had a stopper.

 

Hello, Into Vintage. The Wedgwood Museum's collection is far from comprehensive --

Just got preempted with great info. I searched for 'basalt bottle' & got zip.

 

Wow, thanks ever so much for the speedy reply anundverkaufen! Unfortunately it's lost it's stopper at some point over the years, apart from that, it's in great condition. Do you have any idea of the value?
Thanks, Nick.
www.intovintage.co.uk