News: Business Dollar and precious metals at a glance May 21, 2013 | Modified: May 21, 2013 at 4:31 pm Leave a comment NEW YORK (AP) — Key currency exchange rates Tuesday, compared with late Monday in New York: Sign Up for the Daily E-dition newsletter! Please enter your email address below to begin receiving the Daily E-dition newsletter. You must enter a valid email address in the field above! Thank you for signing up for the Daily E-dition newsletter! You should receive your first newsletter very soon. We're sorry, there was an error processing your newsletter signup. Please click here to visit our Newsletter Signup Center to register for this newsletter.