Here is the link , but what is that dot on each chip ?? Is that a cancellation mark ?
http://www.ebay.com/itm/10-100-Crys...656988?hash=item2834b03cdc:g:l7gAAOSw1WJZEPkx
http://www.ebay.com/itm/10-100-Crys...656988?hash=item2834b03cdc:g:l7gAAOSw1WJZEPkx