English 1798 2P Fantasy?

pruebas

Does anyone know anything about this coin? It is supposed to be a 2 Penny fantasy, but who struck it, when, etc.?
It is copper, plain edge, 41mm, and just a hair over 45g. Dated 1798.

Thanks in advance for any help.

Edit: Sixbid does not allow external linking to their images. I have now attached it here.

cwt

Link/Photo?

cwt

Here is a link to an ebay sale of this item which states the approximate mintage. Possibly the seller can provide you with further information...

link