/biz/ - Business & Finance

I’ve got a question anons.
>bought this butter dish a few months ago for $1.99 at a thrift store, cause I saw the tarnish and I knew that meant silver
>and I needed items to decorate my new apartment with
>Since discovering /biz/, my appreciation for silver has grown
>so today, while gazing longingly at it (and some other finds, all of which, unfortunately, are only silverplate), I realized that it was marked “WM. ROGERS MFG. CO” above a tiny “99” (pic related, hopefully).
Could it really be .99 fine silver? Or is that just an old silverplate marking convention? My fridge magnet wasn’t strong enough to test it so that’s why I’m asking you all :)
A website I found dates the label from between 1865 and 1910, but describes the wm rogers mfg co as a “silver and silverplate manufacturer”, which didnt answer my question. Any help appreciated (and, advice on buying silver during this weird market is also appreciated)