Norman Silver

Nor do we

I think it's silver

Fabulous! Certainly silver, and from before the time of the debasement of the currency that created the alloy we know as "sterling" silver.
Type 2; "bonnet" type, minted 1068-70. Reading the reverse from about 7:00, I think I see ON PILTV, or PILTVN, or even PILTVNE, for the Wilton mint. Is that what you had figured, finder? Any ideas on the moneyer's name?

The more I try to follow around the name of the mint, what I don't find is the cross, which should begin the phrase, and stand between the mint's name and the moneyer. The only place for it to be is down at about 5:00, which makes for a very short moneyer's name, and a very long spelling of "Wilton." In a 1902 edition of The Numismatic Circular, I think I've found it: a William I penny of this variety, listed as having the legend OPI ON PILTVNEN.

thanks for the comments still smiling
pops from UKDN ID IT think I've nailed it.....rev legend is (+)OPIONPILTIINEI.....Making the moneyer OWI (OPI) and the mint Wilton (PILTIINEI)

Congrats again, and don't forget, the moneyer was named first here on CCF!
A fun fact I learned along the way about Owi and the other first moneyers of William the Conqueror's coinage in Wilton: immediately after the Conquest, William's first coin issues were made in the same Saxon style, and, everywhere else in England, by the same moneyers who had minted the last pennies of the late King Harold. But in Wilton, the issues all bore the names of new moneyers. There's some evidence that after the battle of Hastings, the Wilton moneyers made one last issue of posthumous Harold pennies, on the orders of Harold's widowed queen. For this offense, the new Norman king had the old coiners "replaced." From what we know of the Conqueror's style, I don't picture them just being given their notice and a nice letter of reference, either...