Grades to leather are given by either the manufacturer OR the store that is selling it. If the manufacturer has applied a grading system, they are using the numbers/letters to tell you either a) what type of leather was used or b) how the leather was finished or a combination of the two.
Vienna, VA. Vienna is a town in Fairfax County, Virginia, United States. As of the 2010 United States Census, it had a population of 15,687. Significantly more people live in zip codes with the Vienna postal addresses (22180, 22181, and 22182) bordered approximately by Interstate 66 on the south, Interstate 495 on the east, Route 7 to the north, and Hunter Mill road.
Located on the Capital Beltway (Interstate 495) in Northern Virginia, central McLean is 8 miles (13 km) northwest of downtown Washington, D.C. and 9 miles (14 km) northeast of Fairfax, the county seat. The community lies in the Piedmont upland on the west bank of the Potomac River.