This Flower type penny of Eadred is unusual for two reasons; its rarity and its gilding. Consequently, the PAS record designates the find as National Importance
Rarity
It is only the second penny of the Flower type to be recorded at PAS and is believed to be the only one of its type for the moneyer Eadweard.
Gilding
The unusual feature of the gilding is that it is only on the reverse but it does not have any sign of attachments to the obverse to repurpose the coin as a brooch. It is possible that these detached without leaving any marks. An alternative theory is that it was mounted, possibly on a book cover.
Treasure
Single coins do not normally qualify as Treasure Act 1996. As this coin has been modified it is potentially treasure and current advice is that such discoveries should be reported.
CNG Auction
The coin is lot 990 in CNG’s auction on 19 May with an estimate of £1,060. My review of that auction is CNG Feature Auction 117.