Hi Tim and Colin

,
thank you both for the added information, it's appreciated.
I would assume that this would be difficult to date, are there any clues in the manufacture, patina, design...that could help me give it an approximate age ?
I also wondered whether any one could PM me, if they have any idea as to value (for insurance purposes) I think I got it at a 'good price' but not being knowledgeable in this type of object I don't know for sure.
Best Regards David