I saw one just like this in a local antique store here in Mass. last week. Same color, dark olive amber, all-over immense whittling, sloping applied lip and huge iron OP. They wanted $125. for it.
Let's take a moment to give a plug to the "shop in Chichester"... that would be Peter Austin's antique shop
and yes, I'm sure he has many nice demijohns available.