Two More Intersting Finds In The 10 Pound Sack!

The first one appears to have seen some "circulation"; I'd assume it's an intentionally blank token, sold and used as such.

The second one is almost certainly a gear, perhaps from a clock. Not numismatic at all.

On coins, reeding is never applied to a blank like that. Not only would a reeded edge be more prone to getting stuck and jamming the press, the resultant striking of the design would likely flatten, deform or destroy the reeding. Reeding is usually and most easily imparted onto a coin by a collar die, at the same time that the obverse and reverse dies strike the design onto the coin, all in a single strike of the press. Another option, fancied by the Chinese makers of fake coins, is to push the finished coin through a ring die after it has been struck.

Nor are blanks ever made these days by slicing off pieces from a bar. Blanks are made by punching discs out of a sheet of metal. It is more wasteful (since the scissel needs to be melted down again), but there is far greater control over the weight and thickness of the finished coin when using a uniform sheet.