>>http://en.wikipedia.org/wiki/J%C3%A1chymov
>>
>>I suspect the dutch coin Daalder derived from this, and the dutch brought it to North america where it become the dollar.
>>The dutch version of the link above gives more info than the english in this regards.
>
>Couldn't it be coming from one of the Dutch valleys?

Since we do have dutch mountains (dikes), you suspect we have dutch valleys ?? We've got polders but valleys.... nope !!