at Nordstrom`s, not off a blanket) & which`s a standard clumsily marking on the items.
I`ll be wary of any "blanket silver", since my sister merely visited a few years ago enroute from Mexico to her home, & showed off all the big, gaudy Mexican silver & turquoise jewelry bargains. She got to the bottom of the box, and one piece was broken. The "turqoise" was glass with a painted surface; the "silver" was platewd pot metal. None had proper markings on them.
Here`s a page on Mexican Silver:
http://www.pacificpearl.com/archive/2000/april/
feature2.htm