Ed, I've never heard of the term 'V stock' when it comes to identifying buttons.
You didn't mention whether this is brass or iron, but I'm thinking iron, so it's likely to be a civilian clothing button.
You need someone with more button experience than me to chime in here though.
ticndig, I believe it is that exact one. I tried responding on that old forum. So far from others I have it as a French pattern Continental Navy button. It is brass as it is not magnetic, and the dimension of the button is 23.7mm or .93 inch. The stock is the piece that goes across the top of the anchor, and this button has a V shape and not the traditional navy straight stock. Thanks appreciate help, would love to see picture in one of the button books. Need to read up on Continental Navy.