It measures 3 1/2" X 5 1/2" and is in nice shape although there is a small brown stain in the upper left hand corner looking at it from the back/address side.
NOTE: This will be sent via non-machinable mail so that it won't get bent in the postal service rollers. Unfortunately the USPS can't seem to deliver this type of mail in under two weeks....occasionally taking up to four weeks.