Hello,
I said earlier in the thread that this is an area that I find difficult, and I believe others do also.
For that reason alone it is likely that we are not aware of how rare, or common, these lanterns by Nazeing are. I am not aware of anyone showing interest in, or collecting, these.
I have looked at your example and compared it with the one illustrated in Geoff's book on page 102, and, whilst I realise there would be latitude in the making of these items, I'm not entirely convinced they are the same thing.
The hanging apparatus shown in the illustration is far more complex with wire 'chains' leading up to a frame before it is then connected to a hook. If we allow that other examples could have been produced, then it is possible that the hanging method could have been simplified.
Then, looking at the frame that the glass 'bursts' through, the central bubbles go through a circle on the one in your photo, whereas in the illustration the central area is bounded by two wavy bands of metal that have a vertically elongated gap between them, so that the shape the glass goes through is not circular. Above and below these wavy lines the illustration shows the curls of metal connected directly to the wavy lines of metal. The one in your photo shows them clearly seperate.
If it were mine I would, sadly, not be able to attribute it to being "Priory" by Nazeing.
Although it is possible that there could be variations by one manufacturer, it is likely that the main frame would stay consistant, if only because everything would be gigged up to make them. Simplifying the hanging mechanism might well be introduced as a way of reducing the selling price.
As to it's current value, I think that will be determined by the market. Presumably when you bought it you felt the price reasonable, so surely any profit above that would be OK? (allowing for p&p and selling costs of course!). Sometimes buying and selling something can even mean a financial loss, but the profit is always that you've gained knowledge - both of the market and of the item in question.
Lastly, I feel that the problem with these lanterns is that there are many versions made over a protracted period of time, by a number of manufacturers, with only a few alluded to earlier in this topic.
Perhaps Stephen, or Geoff could through more light on the subject?
Nigel